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c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 a n p e c r e s e r v e s t h e r i g h t t o m a k e c h a n g e s t o i m p r o v e r e l i a b i l i t y o r m a n u f a c t u r a b i l i t y w i t h o u t n o t i c e , a n d a d v i s e c u s t o m e r s t o o b t a i n t h e l a t e s t v e r s i o n o f r e l e v a n t i n f o r m a t i o n t o v e r i f y b e f o r e p l a c i n g o r d e r s . 2 . 8 w s t e r e o c l a s s - d a u d i o p o w e r a m p l i f i e r ( w i t h d c v o l u m e c o n t r o l , a g c f u n c t i o n ) a p a 2 6 0 5 t h e a p a 2 6 0 5 i s a s t e r e o , h i g h e f f i c i e n c y , f i l t e r - f r e e c l a s s - d a u d i o a m p l i f i e r a v a i l a b l e i n s o p - 1 8 , s s o p - 2 4 , s s o p - 2 4 p , a n d q f n 4 x 4 - 2 0 a p a c k a g e s . t h e a p a 2 6 0 5 p r o v i d e s t h e p r e c i s e d c v o l u m e c o n t r o l , t h e g a i n r a n g e i s f r o m - 8 0 d b ( v v o l u m e = 0 v ) t o + 2 0 d b ( v v o l u m e = 5 v ) w i t h 6 4 s t e p s p r e c i s e c o n t r o l . i t ? s e a s y t o g e t t h e s u i t a b l e a m p l i f i e r ? s g a i n w i t h t h e 6 4 s t e p s g a i n s e t t i n g . t h e f i l t e r - f r e e a r c h i t e c t u r e e l i m i n a t e s t h e o u t p u t f i l t e r s c o m p a r e d t o t h e t r a d i t i o n a l c l a s s - d a u d i o a m p l i f i e r , a n d r e d u c e s t h e e x t e r n a l c o m p o n e n t c o u n t s a n d t h e c o m p o - n e n t s h i g h , i t c o u l d s a v e t h e p c b s p a c e , s y s t e m c o s t , s i m p l i f i e s t h e d e s i g n a n d t h e p o w e r l o s s a t f i l t e r . a p a 2 6 0 5 p r o v i d e s a n a g c ( n o n - c l i p ) f u n c t i o n , a n d t h i s f u n c t i o n c a n l o w d o w n t h e d y n a m i c r a n g e f o r l a r g e i n p u t s i g n a l . a p a 2 6 0 5 c a n p r o v i d e f r o m 2 0 d b t o - 8 0 d b w i t h 6 4 s t e p s g a i n d e c r e a s e f o r n o n - c l i p p i n g f u n c t i o n , a n d t h i s f u n c t i o n c a n a v o i d o u t p u t s i g n a l c l i p p i n g . t h e a p a 2 6 0 5 a l s o i n t e g r a t e s t h e d e - p o p c i r c u i t r y t h a t r e - d u c e s t h e p o p s a n d c l i c k n o i s e d u r i n g p o w e r o n / o f f o r s h u t d o w n e n a b l e p r o c e s s . t h e a p a 2 6 0 5 h a s b u i l d - i n o v e r - c u r r e n t a n d t h e r m a l p r o - t e c t i o n t h a t p r e v e n t t h e c h i p b e i n g d e s t r o y e d b y s h o r t - c i r c u i t o r o v e r - t e m p e r a t u r e s i t u a t i o n . a p a 2 6 0 5 i s c a p a b l e o f d r i v i n g 2 . 8 w a t 5 v i n t o 4 w s p e a k e r . t h e e f f i c i e n c y c a n a r c h i v e 8 5 % a t r l = 4 w w h e n p o = 2 . 8 w a t v d d = 5 v . f e a t u r e s g e n e r a l d e s c r i p t i o n a p p l i c a t i o n s l c d t v s d v d p l a y e r a c t i v e s p e a k e r s o p e r a t i n g v o l t a g e : 3 . 3 v - 5 . 5 v h i g h e f f i c i e n c y 8 5 % a t p o = 2 . 8 w , 4 w s p e a k e r , v d d = 5 v f i l t e r - f r e e c l a s s - d a m p l i f i e r l o w s h u t d o w n c u r r e n t ? i d d = 1 m a a t v d d = 5 v 6 4 s t e p s v o l u m e a d j u s t a b l e f r o m - 8 0 d b t o + 2 0 d b b y d c v o l t a g e w i t h h y s t e r e s i s a g c ( n o n - c l i p ) f u n c t i o n o u t p u t p o w e r a t t h d + n = 1 % ? 2 . 3 w a t v d d = 5 v , r l = 4 w ? 1 . 3 w a t v d d = 5 v , r l = 8 w o u t p u t p o w e r a t t h d + n = 1 0 % ? 2 . 8 w a t v d d = 5 v , r l = 4 w ? 1 . 6 w a t v d d = 5 v , r l = 8 w l e s s e x t e r n a l c o m p o n e n t s r e q u i r e d t h e r m a l a n d o v e r - c u r r e n t p r o t e c t i o n s w i t h a u t o - r e c o v e r y p o w e r e n h a n c e d p a c k a g e s s s o p - 2 4 , s o p - 1 8 , s s o p - 2 4 p & q f n 4 x 4 - 2 0 a l e a d f r e e a n d g r e e n d e v i c e s a v a i l a b l e ( r o h s c o m p l i a n t ) s i m p l i f i e d a p p l i c a t i o n c i r c u i t apa2605 stereo speakers routp routn loutn loutp rinn linn volume stereo input signals dc volume control
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 a p a 2 6 0 5 p i n c o n f i g u r a t i o n =thermal pad (connected the thermal pad to gnd plane for better dissipation sop-18 (top view) apa2605 gnd 2 loutp 1 loutn 3 17 gnd 18 routp 16 routn pvdd 4 15 pvdd mute 5 vdd 6 13 gnd linn 7 12 rinn volume 9 vdc 8 10 bypass 11 agc 14 sd gnd 3 14 bypass gnd 2 mute 6 linn 8 17 rinn volume 11 19 sd 23 gnd 22 gnd 21 routn 24 routp loutn 4 pvdd 5 16 agc nc 9 vdc10 13 nc nc 12 15 nc ssop-24 (top view) 20 pvdd 18 gnd loutp 1 vdd 7 apa2605 apa2605 qfn4x4-20a top view 11 rinn 12 gnd 13 sd 14 pvdd 15 routn loutn 1 pvdd 2 mute 3 vdd 4 linn 5 v d c 6 v o l u m e 7 n c 8 b y p a s s 9 a g c 1 0 2 0 g n d 1 9 l o u t p 1 8 n c 1 7 r o u t p 1 6 g n d volume 11 13 nc nc 12 ssop-24p pgnd 3 14 bypass pgnd 2 mute 6 linn 8 17 rinn 19 sd 23 pgnd 22 pgnd 21 routn 24 routp loutn 4 pvdd 5 16 agc nc 9 vdc10 15 nc 20 pvdd 18 gnd vdd 7 apa2605 top view loutp 1
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 3 a p a 2 6 0 5 o r d e r i n g a n d m a r k i n g i n f o r m a t i o n note : anpec lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with rohs. anpec lead-free products meet or exceed the lead-free requirements of ipc/jedec j-std-020d for msl classification at lead-free peak reflow temperature. anpec defines ?green? to mean lead-free (rohs compliant) and halogen free (br or cl does not exceed 900ppm by weight in homogeneous material and total of br and cl does not exceed 1500ppm by weight). apa2605 handling code temperature range package code package code n : ssop-24 na : ssop-24p k : sop-18 qa : qfn4x4-20a operating ambient temperature range i : -40 to 85 o c handling code tr : tape & reel assembly material g : halogen and lead free device assembly material apa2605 xxxxx apa2605 n: xxxxx - date code apa2605 xxxxx apa2605 k: xxxxx - date code apa2605 xxxxx apa2605 qa: xxxxx - date code apa2605 xxxxx apa2605 na: xxxxx - date code
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 4 a p a 2 6 0 5 a b s o l u t e m a x i m u m r a t i n g s ( n o t e 1 ) symbol parameter rating unit v dd supply voltage (vdd, pvdd, vdc to gnd) - 0.3 to 6.5 input voltage (linn, rinn to gnd) - 0.3 to v dd +0.3 input voltage (sd, mute, agc, vdc, volume and bypass to gnd) - 0.3 to v dd +0.3 v t j maximum junction temperat ure 150 t stg storage temperature range - 65 to +150 t s dr maximum soldering temperature range , 10 seconds 260 o c p d power dissipation internally limited w n o t e 1 : s t r e s s e s b e y o n d t h o s e l i s t e d u n d e r " a b s o l u t e m a x i m u m r a t i n g s " m a y c a u s e p e r m a n e n t d a m a g e t o t h e d e v i c e . t h e s e a r e s t r e s s r a t i n g s o n l y a n d f u n c t i o n a l o p e r a t i o n o f t h e d e v i c e a t t h e s e o r a n y o t h e r c o n d i t i o n s b e y o n d t h o s e i n d i c a t e d u n d e r " r e c o m - m e n d e d o p e r a t i n g c o n d i t i o n s " i s n o t i m p l i e d . e x p o s u r e t o a b s o l u t e m a x i m u m r a t i n g c o n d i t i o n s f o r e x t e n d e d p e r i o d s m a y a f f e c t d e v i c e r e l i a b i l i t y . t h e r m a l c h a r a c t e r i s t i c s symbol parameter typical value unit q ja thermal resistance - junction to ambient (note 2 ) qfn4x4 - 20a ssop - 24 sop - 18 ssop - 24p 45 96 70 45 o c /w q j c thermal resistance - junction to case (note 3 ) qfn4x4 - 20a ssop - 24 sop - 18 ssop - 24p 7 18 16 11 o c /w n o t e 2 : p l e a s e r e f e r t o ? l a y o u t r e c o m m e n d a t i o n ? , t h e g n d p i n o n t h e c e n t r a l o f t h e i c s h o u l d c o n n e c t t o t h e g r o u n d p l a n , a n d t h e p c b i s a 2 - l a y e r , 5 - i n c h s q u a r e a r e a w i t h 2 o z c o p p e r t h i c k n e s s . n o t e 3 : t h e c a s e t e m p e r a t u r e i s m e a s u r e d a t t h e c e n t e r o f t h e g n d p i n o n t h e u n d e r s i d e o f t h e s s o p - 2 4 , s o p - 1 8 a n d q f n 4 x 4 - 2 0 a p a c k a g e s . r e c o m m e n d e d o p e r a t i n g c o n d i t i o n s symbol parameter range unit v dd supply voltage 3.3 ~ 5.5 v ih high l evel t hreshold v oltage sd , mute 2 ~ v dd v il low l evel t hreshold v oltage sd , mute 0 ~ 0.8 v icm common mode input voltage 1 ~ v dd - 1 v t a ambient t emperature range - 40 ~ 85 t j junction temperature range - 40 ~ 125 o c r l speaker resistance 3.5 ~ w
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 5 a p a 2 6 0 5 e l e c t r i c a l c h a r a c t e r i s t i c s v dd =5v, v gnd =0v, t a =25 o c, gain=20db (unless otherwise noted) apa2605 symbol parameter test condition s min. typ. max. unit v dd =5 v, v gnd = 0v, t a = 25 o c, gain=20db v bypass bypass pin voltage 0.49x v dd 0.5x v dd 0.51x v dd v i dd supply current v mute = 0 v , v sd = 5 v , no load - 5 13 ma i sd shutdown current v mu te =0v, v sd =0v, no load - - 1 i i input current sd, mute, volume - - 1 m a f osc oscillator frequency (v dd =3.3~5.5v, t a = - 40~85 o c) 400 500 600 khz r i(min) minimum input resistance gain=20db 36 43 50 k w v dd =5.5v, i l =0 .8a - 690 - v dd =4.5v, i l =0.6a - 72 0 - r dson static drain - source on - state resistance power mosfet (p+n) v dd =3.6v, i l =0.4a - 76 0 - m w t start - up start - up time from shutdown bypass capacitor, c 1 = 2.2 m f - 1.2 - s v dd =5v, t a =25 x c , gain=6db r l =4 w - 2.3 - thd+n=1% f in =1khz r l =8 w - 1.3 - r l =4 w - 2.8 - p o output power th d+n=10% f in =1khz r l =8 w - 1.6 - w h efficiency r l =4 w , p o =2.8w 80 85 - r l =4 w , p o =1.6w - 0.1 0.3 thd+n total harmonic distortion plus noise f in =1khz r l =8 w , p o =0.8w - 0.08 0.2 % crosstalk channel separation p o =0.2w, r l =4 w , f in =1kh z - - 100 - 60 f in =100hz - - 60 - 50 psrr power supply rejection ratio r l =4 w , input ac - ground f in =1khz - - 70 - 60 snr signal to noise ratio with a - weighting filter v o =1v rms , r l =8 w - 80 - 85 - db att mute mute attenuation f in =1khz, r l =8 w , v in =1v rms - - 1 00 - 80 att shutdown shutdown attenuation f in =1khz, r l =8 w , v in =1v rms - - 120 - 90 db v n output noise with a - weighting filter (gain = 20db) - 80 100 m vrms v os output offset voltage r l =4 w (gain=20db) - 20 30 mv v dd =3.6v, t a =25 x c , gain=6db r l =4 w 1.0 1.1 - thd+n=1 % f in =1khz r l =8 w 0.6 0.65 - r l =4 w - 1.4 - p o output power thd+n=10 % f in =1khz r l =8 w - 0.85 - w h efficiency r l =4 w , p o =1.4w 78 83 - %
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 6 a p a 2 6 0 5 e l e c t r i c a l c h a r a c t e r i s t i c s ( c o n t . ) apa2605 symbol parameter test condition s min. typ. max. unit v dd = 3.6 v, t a =25 x c , gain=6db (cont.) r l =4 w , p o =0.8w - 0.2 0.4 thd+n total harmonic distortion plus noise f in =1khz r l =8 w , p o =0.5w - 0.1 0.3 % crosstalk channel separation p o =0.1 w, r l =4 w , f in =1khz - - 100 - 60 f in = 100 hz - - 60 - 50 psrr power supply rejection ratio r l = 4 w , input ac - ground f in = 1k hz - - 70 - 60 snr signal to noise ratio with a - w eighting filter v o = 1v rms , r l =8 w - 80 - 85 - att mute mute attenuation f in =1 k hz , r l = 8 w , v in = 1v rms - - 100 - 80 att shutdown shutdown attenuation f in =1 k hz , r l = 8 w , v in = 1v rms - - 120 - 90 db v n output noise w ith a - w eight ing filter (gain=20db) - 80 - m v rms v os output offset voltage r l = 4 w (gain=20db) - 20 30 mv v dd =5v, v gnd =0v, t a =25 o c, gain=20db (unless otherwise noted)
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 7 a p a 2 6 0 5 t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s e f f i c i e n c y v s . o u t p u t p o w e r ( 4 w ) e f f i c i e n c y v s . o u t p u t p o w e r ( 8 w ) efficiency vs. output power (qfn4x4-20a 4 w ) efficiency (%) output power (w) 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 r l =4 w +33 m h f in =1khz thd+n ?? 10% a v =20db aux-0025 aes-17(20khz) qfn4x4-2a efficiency vs. output power (qfn4x4-20a 8 w ) efficiency (%) output power (w) 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 0.0 0.5 1.0 1.5 2.0 r l =8 w +33 m h f in =1khz thd+n ?? 10% a v =20db aux-0025 aes-17(20khz) qfn4x4-2a t h d + n v s . o u t p u t p o w e r thd+n (%) output power (w) t h d + n v s . o u t p u t p o w e r thd+n (%) output power (w) r l =8 w +33 m h f in =1khz thd+n ?? 10% a v =20db aux-0025 aes-17(20khz) 0.0 0.5 1.0 1.5 2.0 0 10 20 30 40 50 60 70 80 90 100 efficiency (%) output power (w) r l =4 w +33 m h f in =1khz thd+n ?? 10% a v =20db aux-0025 aes-17(20khz) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 10 20 30 40 50 60 70 80 90 100 efficiency (%) output power (w) 0.1 2 0.4 1 f in =1khz r l = 8 w a v =20db aux-0025 aes- 17(20khz) qfn4x4-20a 0.0 1 20 0.0 2 0.0 5 0.1 0.2 0.5 1 2 5 10 v dd =3.6v v dd =5v v dd =5.5v v dd =3.3v 0.1 4 0.4 1 2 3 f in =1khz r l =4 w a v =20db aux-0025 aes-17(20khz) qfn4x4-2a 0.01 20 0.02 0.05 0.1 0.2 0.5 1 2 5 10 v dd =3.3v v dd =3.6v v dd =5v v dd =5.5v
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 8 a p a 2 6 0 5 t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s ( c o n t . ) t h d + n v s . f r e q u e n c y t h d + n v s . f r e q u e n c y t h d + n ( % ) v dd =5.0v p o =1.7/0.85/0.1w r l =4 w aux-0025 aes-17(20khz) sop-18 a v =6db, po=0.85w a v =6db, po=1.7w a v =6db, po=0.1w frequency (hz ) 0.001 10 0.01 0.1 1 20 20k 100 1k 10k t h d + n ( % ) frequency (hz ) v dd =3.3/3.6/5.0/5.5v p o =0.7/0.85/1.7/2w r l =4 w aux-0025 aes-17(20khz) sop-18 a v =20db,vdd=5.5v, p o =2w a v =20db,vdd=5.0v, p o =1.7w a v =20db,vdd=3.3v, p o =0.7w a v =20db,vdd=3.6v, p o =0.85w 20 20k 100 1k 10k 0.001 10 0.01 0.1 1 t h d + n v s . o u t p u t p o w e r t h d + n v s . o u t p u t p o w e r t h d + n v s . o u t p u t p o w e r t h d + n v s . o u t p u t p o w e r 0.03 4 0.1 1 v dd =3.6v t h d + n ( % ) output power (w ) f in =1khz r l = 4 w a v = 20 d b aux-0025 aes-17(20khz) sop- 18 v dd =5v v dd =5.5v v dd =3.3v 0.01 20 0.1 1 10 t h d + n ( % ) output power (w ) f in =1khz r l =4 w aux-0025 aes-17(20khz) sop-18 a v =12db a v =6db a v =20db 0.01 10 0.1 1 0.07 4 0.01 0.1 1 2 output power (w ) t h d + n ( % ) f in =1khz r l =8 w aux-0025 aes-17(20khz) sop-18 a v =12db a v =6db a v =20db 0.01 10 0.1 1 0.07 3 0.01 0.1 1 2 v dd =3.6v v dd =5v v dd =5.5v v dd =3.3v f in =1khz r l =8 w a v = 20 d b aux-0025 aes-17(20khz) sop- 18 output power (w ) t h d + n ( % ) 0.01 20 0.1 1 10 0.01 2 0.1 1
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 9 a p a 2 6 0 5 t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s ( c o n t . ) c r o s s t a l k v s . f r e q u e n c y c r o s s t a l k v s . f r e q u e n c y 10 20k 100 1k 10k c r o s s t a l k ( d b ) frequency (hz ) v dd =5.0v p o =1w r l =8 w aux-0025 aes-17(20khz) sop-18 a v =20db, r-ch to l-ch a v =20db, l-ch to r-ch a v =6db, l-ch to r-ch a v =6db, r-ch to l-ch -120 -60 -115 -110 -105 -100 -95 -90 -85 -80 -75 -70 -65 v dd =3.6v p o =0.5w r l =8 w aux-0025 aes-17(20khz) sop-18 a v =20db, r-ch to l-ch a v =20db, l-ch to r-ch a v =6db, l-ch to r-ch a v =6db, r-ch to l-ch c r o s s t a l k ( d b ) frequency (hz ) 10 20k 100 1k 10k -120 -60 -110 -100 -90 -80 -70 t h d + n v s . f r e q u e n c y t h d + n v s . f r e q u e n c y c r o s s t a l k v s . f r e q u e n c y c r o s s t a l k v s . f r e q u e n c y 20 20k 100 1k 10k t h d + n ( % ) frequency (hz ) v dd =3.3/3.6/5.0/5.5v p o =0.42/0.5/1/1.2w r l =8 w aux-0025 aes-17(20khz) sop-18 a v =20db, vdd=5.5v, p o =1.2w a v =20db, vdd=5.0v, p o =1w a v =20db, vdd=3.3v, p o =0.42w a v =20db, vdd=3.6v, p o =0.5w 0.001 10 0.01 0.1 1 v dd =5.0v p o =1/0.5/0.1w r l =8 w aux-0025 aes-17(20khz) sop-18 t h d + n ( % ) frequency (hz ) a v =6db, po=0.5w a v =6db, po=1w a v =6db, po=0.1w 0.001 10 0.01 0.1 1 20 20k 100 1k 10k c r o s s t a l k ( d b ) frequency (hz ) v dd =5.0v p o =2w r l =4 w aux-0025 aes-17(20khz) sop-18 a v =20db, r-ch to l-ch a v =20db, l-ch to r-ch a v =6db, l-ch to r-ch a v =6db, r-ch to l-ch -120 -60 -110 -100 -90 -80 -70 10 20k 100 1k 10k v dd =3.6v p o =1w r l =4 w aux-0025 aes-17(20khz) sop-18 frequency (hz ) c r o s s t a l k ( d b ) a v =20db, r-ch to l-ch a v =20db, l-ch to r-ch a v =6db, l-ch to r-ch a v =6db, r-ch to l-ch -120 -60 -115 -110 -105 -100 -95 -90 -85 -80 -75 -70 -65 10 20k 100 1k 10k
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 0 a p a 2 6 0 5 t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s ( c o n t . ) m u t e a t t e n u a t i o n v s . f r e q u e n c y s h u t d o w n a t t e n u a t i o n v s . f r e q u e n c y g a i n ( d b ) frequency (hz ) t v dd =5.0v r l =4 w a v =20db v o =1vrms aux-0025 aes-17(20khz) sop-18 -120 -80 -110 -100 -90 right channel left channel 20 20k 100 1k 10k t v dd =5.0v r l =4 w a v =20db v o =1vrms aux-0025 aes-17(20khz) sop-18 g a i n ( d b ) frequency (hz ) right channel left channel -100 -60 -90 -80 -70 20 20k 100 1k 10k o u t p u t n o i s e v o l t a g e v s . f r e q u e n c y o u t p u t n o i s e v o l t a g e v s . f r e q u e n c y f r e q u e n c y r e s p o n s e f r e q u e n c y r e s p o n s e v dd =5.0v r l =8 w po=150mw aux-0025 sop-18 g a i n ( d b ) frequency (hz ) p h a s e ( d e g ) amplitude,a v =20db amplitude,a v =7.6db phase, a v =20db phase, a v =7.6db +2 +22 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +20 +21 10 200k 100 1k 10k -200 +400 -175 -100 +0 +100 +200 +300 a v =20db a v =10db a v =6db frequency (hz ) o u t p u t n o i s e v o l t a g e ( v r m s ) v dd =5.0v r l =8 w input ac ground aux-0025 aes-17(20khz) sop-18 20 m 200 m 40 m 60 m 80 m 100 m 120 m 140 m 160 m 180 m 10 20k 100 1k 10k 10 20k 100 1k 10k v dd =3.6v r l =8 w input ac ground aux-0025 aes-17(20khz) sop-18 o u t p u t n o i s e v o l t a g e ( v r m s ) frequency (hz ) a v =20db a v =10db a v =6db 20 m 200 m 40 m 60 m 80 m 100 m 120 m 140 m 160 m 180 m 10 200k 100 1k 10k g a i n ( d b ) frequency (hz ) v dd =3.6v r l =8 w po=70mw aux-0025 sop-18 amplitude,a v =20db amplitude,a v =10db phase, a v =20db phase, a v =10db +2 +22 +4 +6 +8 +10 +12 +14 +16 +18 +20 -200 +400 -100 +0 +100 +200 +300 p h a s e ( d e g )
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 1 a p a 2 6 0 5 t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s ( c o n t . ) agc function output power vs. input ac agc function output power vs. input ac 0.2 1.4 0.4 0.6 0.8 1 1.2 o u t p u t p o w e r ( w ) input ac (vrms ) v dd =5.0v r l =4 w aes-17(20khz) ssop-24 0 3 1 2 2.2 2.4 2.6 0.2 1.4 0.4 0.6 0.8 1 1.2 o u t p u t p o w e r ( w ) input ac (vrms ) v dd =5.0v r l =8 w aes-17(20khz) ssop-24 0.2 1.6 1 1.2 1.4 p s r r v s . f r e q u e n c y g a i n v s . v o l u m e v o l t a g e 0 2 4 6 8 0.0 2.0 4.0 6.0 no load voltage (v ) s h u t d o w n c u r r e n t ( m a ) s u p p l y c u r r e n t v s . s u p p l y v o l t a g e s h u t d o w n c u r r e n t v s . s u p p l y v o l t a g e 0.0 0.2 0.4 0.6 0.8 1.0 0.0 2.0 4.0 6.0 no load voltage (v ) s h u t d o w n c u r r e n t ( m a ) frequency (hz ) p s r r ( d b ) v dd =5.0v r l =8 w a v =20db v rr =0.2vrms input floating aux-0025 aes-17(20khz) sop-18 -80 +0 -70 -60 -50 -40 -30 -20 -10 20 20k 100 1k 10k dc volume voltage (v ) g a i n ( d b ) v dd =5.0v no load aux-0025 aes-17(20khz) gain down gain up 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 2 a p a 2 6 0 5 pin no. ssop - 24 sop - 18 qfn4x4 - 20a name i/o/p function 1 1 19 loutp o positive output of left channel power amplifier. 4 3 1 loutn o negative output of left channel power amplifier. 5,20 4,15 2,14 pvdd p power amplifier?s power supply . 6 5 3 mu te i mute control signal input. p lace e ntire ic in mute m ode w hen h eld l ow. 7 6 4 vdd p control and bias block?s power supply . 8 7 5 linn i n egative i nput of left channel power amplifier . 9,12,13,15 - 8,18 nc - no c onnection. 10 8 6 vdc p volume c ontro l block?s power supply . 11 9 7 volume i internal gain setting input. 14 10 9 bypass p bias voltage for power amplifiers. 16 11 10 agc i maximum o utput p ower setting input. when held high disable agc function. 17 12 11 rinn i n egative i nput of right cha nnel power amplifier . 2,3, 18,22,23 2,13,17 12,16,20 gnd p control and bias block?s ground . 19 14 13 sd i shutdown m ode c ontrol i nput. p lace e ntire ic in s hutdown m ode w hen h eld l ow. 21 16 15 routn o negative output of right channel power amplifier. 2 4 18 17 routp o positive output of right channel power amplifier. p i n d e s c r i p t i o n
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 3 a p a 2 6 0 5 b l o c k d i a g r a m protection function gate drive gate drive routp pvdd routn rinn oscillator volume linn shutdown control gate drive gate drive loutp pvdd loutn volume control biases & reference sd bypass bypass gnd agc control agc vdd gnd gnd vdc mute
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 4 a p a 2 6 0 5 t y p i c a l a p p l i c a t i o n c i r c u i t rl ( w ) r 2 ( k w ) r 3 ( k w ) p o (w) v agc (v) 30.1 12.0 2. 19 1.4 25 4 26.7 12.0 1.7 1 1.5 50 8 30.9 12.0 1.15 1.400 v d d = 5 v mute control 4 w 2 pgnd 1 loutp 3 loutn pgnd 17 routp 18 routn 16 4 pvdd pvdd 15 5 mute 6 vdd gnd 13 7 linn rinn 12 9 volume 8 vdc bypass 10 agc 11 sd 14 4 w 10 m f pv dd c s1 0.1 m f c s2 0.1 m f c s3 shutdown control 1 m f left channel input signal c i2 1 m f left channel input signal c i2 v dd 2.2 m f c b r 1 50k w c s4 1 m f apa2605 (top view) v dd r2 r3 c s 5 1 m f note 4 :the resistance must use 1%.
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 5 a p a 2 6 0 5 d c v o l u m e c o n t r o l t a b l e step gain low (%) high (%) recom (%) low (5v) high (5v) recom (5v) 1 20.0 97.7 100.0 100.0 4.885 5.000 5.00 2 19.6 96.2 96.6 96.4 4.808 4.830 4.82 3 19.2 94.6 95.1 94.8 4.731 4.753 4.74 4 18.8 93.1 93.5 93.3 4.653 4.675 4.66 5 18.4 91.5 92.0 91.7 4.57 6 4.598 4.59 6 18.0 90.0 90.4 90.2 4.499 4.521 4.51 7 17.6 88.4 88.9 88.6 4.421 4.443 4.43 8 17.2 86.9 87.3 87.1 4.344 4.366 4.36 9 16.8 85.3 85.8 85.6 4.267 4.289 4.28 10 16.4 83.8 84.2 84.0 4.189 4.211 4.20 11 16.0 82.2 82.7 82.5 4.112 4.134 4.12 12 15.6 80.7 81.1 80.9 4.035 4.057 4.05 13 15.2 79.1 79.6 79.4 3.957 3.980 3.97 14 14.8 77.6 78.0 77.8 3.880 3.902 3.89 15 14.4 76.1 76.5 76.3 3.803 3.825 3.81 16 14.0 74.5 75.0 74.7 3.725 3.748 3.74 17 13.6 73.0 73.4 73.2 3.648 3.670 3.66 18 13.2 71 .4 71.9 71.6 3.571 3.593 3.58 19 12.8 69.9 70.3 70.1 3.493 3.516 3.50 20 12.4 68.3 68.8 68.5 3.416 3.438 3.43 21 12.0 66.8 67.2 67.0 3.339 3.361 3.35 22 11.6 65.2 65.7 65.5 3.261 3.284 3.27 23 11.2 63.7 64.1 63.9 3.184 3.207 3.20 24 10.8 62.1 62.6 62 .4 3.107 3.129 3.12 25 10.4 60.6 61.0 60.8 3.029 3.052 3.04 26 10.0 59.0 59.5 59.3 2.952 2.975 2.96 27 9.6 57.5 57.9 57.7 2.875 2.897 2.89 28 9.2 55.9 56.4 56.2 2.797 2.820 2.81 29 8.8 54.4 54.9 54.6 2.720 2.743 2.73 30 8.4 52.9 53.3 53.1 2.643 2.665 2.65 31 8.0 51.3 51.8 51.5 2.565 2.588 2.58 32 7.6 49.8 50.2 50.0 2.488 2.511 2.50 33 7.2 48.2 48.7 48.4 2.411 2.433 2.42 34 6.8 46.7 47.1 46.9 2.333 2.356 2.34 35 6.4 45.1 45.6 45.3 2.256 2.279 2.27 36 6.0 43.6 44.0 43.8 2.179 2.202 2.19 37 5.6 42 .0 42.5 42.3 2.101 2.124 2.11 38 5.2 40.5 40.9 40.7 2.024 2.047 2.04
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 6 a p a 2 6 0 5 d c v o l u m e c o n t r o l t a b l e ( c o n t . ) step gain low (%) high (%) recom (%) low (5v) high (5v) recom (5v) 39 4.8 38.9 39.4 39.2 1.947 1.970 1.96 40 4.4 37.4 37.8 37.6 1.869 1.892 1.88 41 4.0 35.8 36.3 36.1 1.792 1.815 1.80 42 3.6 34.3 34.8 34.5 1.715 1.738 1.73 43 3.2 32.7 33.2 33.0 1.637 1.660 1.65 44 2.8 31.2 31.7 31.4 1.560 1.583 1.57 45 2.4 29.6 30.1 29.9 1.482 1.506 1.49 46 2.0 28.1 28.6 28.3 1.405 1.429 1.42 47 1.6 26.6 27.0 26.8 1.328 1.351 1.34 48 1.2 25.0 25.5 25.2 1.250 1.274 1.26 49 0.8 23.5 23.9 23.7 1.173 1.197 1.18 50 0 .4 21.9 22.4 22.2 1.096 1.119 1.11 51 0.0 20.4 20.8 20.6 1.018 1.042 1.03 52 - 1.0 18.8 19.3 19.1 0.941 0.965 0.95 53 - 2.0 17.3 17.7 17.5 0.864 0.887 0.88 54 - 3.0 15.7 16.2 16.0 0.786 0.810 0.80 55 - 5.0 14.2 14.7 14.4 0.709 0.733 0.72 56 - 7.0 12.6 13. 1 12.9 0.632 0.655 0.64 57 - 9.0 11.1 11.6 11.3 0.554 0.578 0.57 58 - 11.0 9.5 10.0 9.8 0.477 0.501 0.49 59 - 17.0 8.0 8.5 8.2 0.400 0.424 0.41 60 - 23.0 6.4 6.9 6.7 0.322 0.346 0.33 61 - 29.0 4.9 5.4 5.1 0.245 0.269 0.26 62 - 35.0 3.4 3.8 3.6 0.168 0.192 0.18 63 - 41.0 1.8 2.3 2.0 0.090 0.114 0.10 64 - 80.0 0.0 3.8 0.0 0.000 0.192 0.00
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 7 a p a 2 6 0 5 f u n c t i o n d e s c r i p t i o n class-d operation f i g u r e 1 . t h e a p a 2 6 0 5 o u t p u t w a v e f o r m ( v o l t a g e & c u r r e n t ) t h e a p a 2 6 0 5 p o w e r a m p l i f i e r m o d u l a t i o n s c h e m e i s s h o w n i n f i g u r e 1 ; t h e o u t p u t s v o u t p a n d v o u t n a r e i n p h a s e w i t h e a c h o t h e r w h e n n o i n p u t s i g n a l s . w h e n o u t p u t > 0 v , t h e d u t y c y c l e o f v o u t p i s g r e a t e r t h a n 5 0 % a n d v o u t n i s l e s s t h a n 5 0 % ; w h e n o u t p u t < 0 v , t h e d u t y c y c l e o f v o u t p i s l e s s t h a n 5 0 % a n d v o u t n i s g r e a t e r t h a n 5 0 % . t h i s m e t h o d r e d u c e s t h e s w i t c h i n g c u r r e n t a c r o s s t h e l o a d , a n d r e - d u c e s t h e i 2 r l o s s e s i n t h e l o a d t h a t i m p r o v e t h e a m p l i f i e r ? s e f f i c i e n c y . t h i s m o d u l a t i o n s c h e m e h a s v e r y s h o r t p u l s e s a c r o s s t h e l o a d , t h i s m a k i n g t h e s m a l l r i p p l e c u r r e n t a n d v e r y l i t t l e l o s s o n t h e l o a d , a n d t h e l c f i l t e r c a n b e e l i m i n a t e d i n m o s t a p p l i c a t i o n s . a d d e d t h e l c f i l t e r c a n i n c r e a s e t h e e f f i c i e n c y b y f i l t e r t h e r i p p l e c u r r e n t . bypass voltage the bypass voltage is equal to v dd /2, this voltage is for bias the internal preamplifier stages. the external ca- pacitor for this reference (c b ) is a critical component and serves several important functions. dc volume control function t h e a p a 2 6 0 5 h a s a n i n t e r n a l s t e r e o v o l u m e c o n t r o l w h o s e s e t t i n g i s t h e f u n c t i o n o f t h e d c v o l t a g e a p p l i e d t o t h e v o l u m e i n p u t p i n . t h e a p a 2 6 0 5 v o l u m e c o n t r o l c o n s i s t s o f 6 4 s t e p s t h a t a r e i n d i v i d u a l l y s e l e c t e d b y a v a r i a b l e d c v o l t a g e l e v e l o n t h e v o l u m e c o n t r o l p i n . t h e r a n g e o f t h e s t e p s c o n t r o l l e d b y t h e d c v o l t a g e , a r e f r o m + 2 0 d b t o - 8 0 d b . e a c h g a i n s t e p c o r r e s p o n d s t o a s p e c i f i c i n p u t v o l t a g e r a n g e , a s s h o w n i n t h e t a b l e . t o m i n i m i z e t h e e f f e c t o f n o i s e o n t h e v o l u m e c o n t r o l p i n , w h i c h c a n a f f e c t t h e s e l e c t e d g a i n l e v e l , h y s t e r e s i s a n d c l o c k d e l a y a r e i m p l e m e n t e d . t h e a m o u n t o f h y s t e r e s i s c o r r e s p o n d s t o h a l f o f t h e s t e p w i d t h , a s s h o w n i n t h e ? d c v o l u m e c o n - t r o l g r a p h . ? f o r t h e h i g h e s t a c c u r a c y , t h e v o l t a g e s h o w n i n t h e ? r e c - o m m e n d e d v o l t a g e ? c o l u m n o f t h e t a b l e i s u s e d t o s e l e c t a d e s i r e d g a i n . t h i s r e c o m m e n d e d v o l t a g e i s e x a c t l y h a l f - w a y b e t w e e n t h e t w o n e a r e s t t r a n s i t i o n s . t h e g a i n s l e v e l h a v e a r e 0 . 4 d b / s t e p f r o m 2 0 d b t o 0 d b ; 1 d b / s t e p f r o m 0 d b t o - 3 d b ; 2 d b / s t e p f r o m - 3 d b t o - 1 1 d b a n d 6 d b / s t e p f r o m - 1 1 d b t o - 4 1 d b a n d t h e l a s t s t e p a t - 8 0 d b a s m u t e m o d e . v outp v out (v outp -v outn ) i out i out output = 0v output > 0v i out output < 0v v outn v outp v outn v outn v outp v out (v outp -v outn ) v out (v outp -v outn ) agc (non-clipping) function t h e a p a 2 6 0 5 p r o v i d e s t h e 6 4 s t e p s n o n - c l i p p i n g c o n t r o l , a n d t h e r a n g e i s f r o m 2 0 d b t o - 8 0 d b . w h e n t h e o u t p u t r e a c h e s t h e m a x i m u m p o w e r s e t t i n g v a l u e , t h e i n t e r n a l p r o g r a m m a b l e g a i n a m p l i f i e r ( p g a ) w i l l d e c r e a s e t h e g a i n f o r p r e v e n t t h e o u t p u t w a v e f o r m c l i p p i n g . t h i s f e a t u r e p r e - v e n t s s p e a k e r d a m a g e f r o m o c c u r r i n g c l i p p i n g . u s i n g t h e a g c p i n t o s e t t h e n o n - c l i p p i n g f u n c t i o n a n d l i m i t t h e o u t p u t p o w e r .
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 8 a p a 2 6 0 5 f u n c t i o n d e s c r i p t i o n ( c o n t . ) shutdown operation i n o r d e r t o r e d u c e p o w e r c o n s u m p t i o n w h i l e n o t i n u s e , t h e a p a 2 6 0 5 c o n t a i n s a s h u t d o w n f u n c t i o n t o e x t e r n a l l y t u r n o f f t h e a m p l i f i e r b i a s c i r c u i t r y . t h i s s h u t d o w n f e a t u r e t u r n s t h e a m p l i f i e r o f f w h e n l o g i c l o w i s p l a c e d o n t h e s d p i n f o r a p a 2 6 0 5 . t h e t r i g g e r p o i n t b e t w e e n a l o g i c h i g h a n d l o g i c l o w l e v e l i s t y p i c a l l y 0 . 6 5 v . i t i s t h e b e s t t o s w i t c h b e t w e e n g r o u n d a n d t h e s u p p l y v o l t a g e v d d t o p r o v i d e m a x i m u m d e v i c e p e r f o r m a n c e . b y s w i t c h i n g t h e s d p i n t o a l o w l e v e l , t h e a m p l i f i e r e n t e r s a l o w - c o n s u m p t i o n - c u r r e n t s t a t e , i d d f o r a p a 2 6 0 5 i s i n s h u t d o w n m o d e . o n n o r m a l o p e r a t i n g , a p a 2 6 0 5 ? s s d p i n s h o u l d p u l l t o a h i g h l e v e l t o k e e p t h e i c o u t o f t h e s h u t d o w n m o d e . t h e s d p i n s h o u l d b e t i e d t o a d e f i n i t e v o l t a g e t o a v o i d u n w a n t e d s t a t e c h a n g e s . over-current protection t h e a p a 2 6 0 5 m o n i t o r s t h e o u t p u t c u r r e n t , a n d w h e n t h e c u r r e n t e x c e e d s t h e c u r r e n t - l i m i t t h r e s h o l d , t h e a p a 2 6 0 5 t u r n - o f f t h e o u t p u t s t a g e t o p r e v e n t t h e o u t p u t d e v i c e f r o m d a m a g e s i n o v e r - c u r r e n t o r s h o r t - c i r c u i t c o n d i t i o n . t h e i c w i l l t u r n - o n t h e o u t p u t b u f f e r a f t e r 1 m s , b u t i f t h e o v e r - c u r r e n t o r s h o r t - c i r c u i t s c o n d i t i o n i s s t i l l r e m a i n , i t e n t e r s t h e o v e r - c u r r e n t p r o t e c t i o n a g a i n . t h e s i t u a t i o n w i l l c i r - c u l a t e u n t i l t h e o v e r - c u r r e n t o r s h o r t - c i r c u i t s h a s b e r e m o v e d . thermal protection t h e o v e r - t e m p e r a t u r e c i r c u i t l i m i t s t h e j u n c t i o n t e m p e r a - t u r e o f t h e a p a 2 6 0 5 . w h e n t h e j u n c t i o n t e m p e r a t u r e e x - c e e d s t j = + 1 5 0 o c , a t h e r m a l s e n s o r t u r n s o f f t h e o u t p u t b u f f e r , a l l o w i n g t h e d e v i c e s t o c o o l . t h e t h e r m a l s e n s o r a l l o w s t h e a m p l i f i e r t o s t a r t - u p a f t e r t h e j u n c t i o n t e m p e r a - t u r e g o i n g d o w n t o a b o u t 1 2 5 o c . t h e t h e r m a l p r o t e c t i o n i s d e s i g n e d w i t h a 2 5 o c h y s t e r e s i s t o l o w e r t h e a v e r a g e t j d u r i n g c o n t i n u o u s t h e r m a l o v e r l o a d c o n d i t i o n s , i n - c r e a s i n g l i f e t i m e o f t h e i c . table 1: agc setting threshold v.s output power agc function output power vdd~0.45vdd disable agc function 0.45vdd~0.27vdd rl p 2 agc o v vdd 2 1 95 . 0 x 8 ? ? ? ? - = 0.27vdd~gnd (agc floating) (max output power 4 w ) po=2.513w (max output power 8 w ) po=1.26w
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 1 9 a p a 2 6 0 5 a p p l i c a t i o n i n f o r m a t i o n square wave into the speaker a p p l y t h e s q u a r e w a v e i n t o t h e s p e a k e r m a y c a u s e t h e v o i c e c o i l o f s p e a k e r j u m p i n g o u t o f t h e a i r g a p a n d d e f a c - i n g t h e v o i c e c o i l . h o w e v e r , t h i s d e p e n d s o n t h e a m p l i - t u d e o f s q u a r e w a v e i s h i g h e n o u g h a n d t h e b a n d w i d t h o f s p e a k e r i s h i g h e r t h a n t h e s q u a r e w a v e ? s f r e q u e n c y . f o r 5 0 0 k h z s w i t c h i n g f r e q u e n c y , t h i s i s n o t i s s u e d f o r t h e s p e a k e r b e c a u s e t h e f r e q u e n c y i s b e y o n d t h e a u d i o b a n d a n d c a n ? t s i g n i f i c a n t l y m o v e t h e v o i c e c o i l , a s c o n e m o v e - m e n t i s p r o p o r t i o n a l t o 1 / f 2 f o r f r e q u e n c y o u t o f a u d i o b a n d . input resistor, r i f o r a c h i e v i n g t h e 6 4 s t e p s g a i n s e t t i n g , i t v a r i e s t h e i n p u t r e s i s t a n c e n e t w o r k ( r i & r f ) o f a m p l i f i e r . t h e i n p u t r e s i s t o r ? s r a n g e f o r m s m a l l e s t t o m a x i m u m i s a b o u t s i x t i m e s . t h e r e f o r e , t h e i n p u t h i g h - p a s s f i l t e r ? s l o w c u t o f f f r e q u e n c y w i l l c h a n g e f o r s i x t i m e s f r o m l o w t o h i g h . t h e c u t o f f f r e q u e n c y c a n b e c a l c u l a t e d b y e q u a t i o n 1 . input capacitor, c i i n t h e t y p i c a l a p p l i c a t i o n , a n i n p u t c a p a c i t o r , c i , i s r e q u i r e d t o a l l o w t h e a m p l i f i e r t o b i a s t h e i n p u t s i g n a l t o t h e p r o p e r d c l e v e l f o r o p t i m u m o p e r a t i o n . i n t h i s c a s e , c i a n d t h e i n p u t i m p e d a n c e r i f o r m a h i g h - p a s s f i l t e r w i t h t h e c o r n e r f r e q u e n c y d e t e r m i n e d i n t h e f o l l o w i n g e q u a t i o n : ( 1 ) i i ) c(highpass c r 2 1 f p = t h e v a l u e o f c i m u s t b e c o n s i d e r e d c a r e f u l l y b e c a u s e i t d i r e c t l y a f f e c t s t h e l o w f r e q u e n c y p e r f o r m a n c e o f t h e c i r c u i t . w h e r e r i i s 3 6 k w ( m i n i m u m ) a n d t h e s p e c i f i c a t i o n c a l l s f o r a f l a t b a s s r e s p o n s e d o w n t o 5 0 h z . t h e e q u a t i o n i s r e c o n f i g u r e d a s b e l o w : ( 2 ) c i i f r 2 1 c p = w h e n t h e i n p u t r e s i s t a n c e v a r i a t i o n i s c o n s i d e r e d , t h e c i i s 0 . 0 8 m f , s o a v a l u e i n t h e r a n g e o f 0 . 0 1 m f t o 0 . 0 2 2 m f w o u l d b e c h o s e n . a f u r t h e r c o n s i d e r a t i o n f o r t h i s c a p a c i - t o r i s t h e l e a k a g e p a t h f r o m t h e i n p u t s o u r c e t h r o u g h t h e i n p u t n e t w o r k ( r i + r f , c i ) t o t h e l o a d . t h i s l e a k a g e c u r r e n t c r e a t e s a d c o f f s e t v o l t a g e a t t h e i n p u t t o t h e a m p l i f i e r t h a t r e d u c e s u s e f u l h e a d r o o m , e s p e c i a l l y i n h i g h g a i n a p p l i c a t i o n s . f o r t h i s r e a s o n , a l o w - l e a k a g e t a n t a l u m o r c e r a m i c c a p a c i t o r i s t h e b e s t c h o i c e . w h e n p o l a r i z e d c a - p a c i t o r s a r e u s e d , t h e p o s i t i v e s i d e o f t h e c a p a c i t o r s h o u l d f a c e t h e a m p l i f i e r s ? i n p u t i n m o s t a p p l i c a t i o n s b e c a u s e t h e d c l e v e l o f t h e a m p l i f i e r s ? i n p u t s a r e h e l d a t v d d / 2 . p l e a s e n o t e t h a t i t i s i m p o r t a n t t o c o n f i r m t h e c a p a c i t o r p o l a r i t y i n t h e a p p l i c a t i o n . gain vs. input resistance gain (db) i n p u t r e s i s t a n c e ( k w ) 20 30 40 50 60 70 80 90 100 110 120 130 140 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 effective bypass capacitor, c b as with any power amplifier, proper supply bypassing is critical for low noise performance and high power supply rejection. the bypass capacitance sffects the startiup time. it is determined in the following wquation: the capacitor location on the bypass pin should be as close to the device as possible. the effect of a larger half bypass capacitor is improved psrr due to increased half-supply stability. the selection of bypass capacitors, especially c b , is thus dependent upon desired psrr requirements, click and pop performance. to avoid the start-up pop noise occurred, choose c i which is not larger than c b . t s t a r t - u p = 0 . 5 ( s e c / m f ) x c b + 0 . 2 ( s e c ) ( 3 )
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 0 a p a 2 6 0 5 a p p l i c a t i o n i n f o r m a t i o n ( c o n t . ) f i g u r e 2 . f e r r i t e b e a d o u t p u t f i l t e r v on v op 4 w 1n f 1n f ferrite bead ferrite bead f i g u r e 3 a n d 4 a r e e x a m p l e s f o r a d d e d t h e l c f i l t e r ( b u t t e r w o r t h ) , i t ? s r e c o m m e n d e d f o r t h e s i t u a t i o n t h a t t h e t r a c e f o r m a m p l i f i e r t o s p e a k e r i s t o o l o n g a n d n e e d s t o e l i m i n a t e t h e r a d i a t e d e m i s s i o n o r e m i . f i g u r e 3 . l c o u t p u t f i l t e r f o r 8 w s p e a k e r outp outn 8 w 1 m f 36 m h 36 m h 1 m f f i g u r e 4 . l c o u t p u t f i l t e r f o r 4 w s p e a k e r outp outn 4 w 2.2 m f 18 m h 18 m h 2.2 m f f i g u r e 3 a n d 4 ? s l o w p a s s f i l t e r c u t - o f f f r e q u e n c y a r e 2 5 k h z ( f c ) . lc 2 1 f c(lowpass) p = ( 5 ) power-supply decoupling capacitor, c s t h e a p a 2 6 0 5 i s a h i g h - p e r f o r m a n c e c m o s a u d i o a m p l i - f i e r t h a t r e q u i r e s a d e q u a t e p o w e r s u p p l y d e c o u p l i n g t o e n s u r e t h e o u t p u t t o t a l h a r m o n i c d i s t o r t i o n ( t h d ) i s a s l o w a s p o s s i b l e . p o w e r s u p p l y d e c o u p l i n g a l s o p r e v e n t s t h e o s c i l l a t i o n s b e i n g c a u s e d b y l o n g l e a d l e n g t h b e - t w e e n t h e a m p l i f i e r a n d t h e s p e a k e r . ferrite bead selection i f t h e t r a c e s f o r m a p a 2 6 0 5 t o s p e a k e r a r e s h o r t , t h e f e r r i t e b e a d f i l t e r s c a n r e d u c e t h e h i g h f r e q u e n c y r a d i a t e d t o m e e t t h e f c c & c e r e q u i r e d . a f e r r i t e t h a t h a s v e r y l o w i m p e d a n c e a t l o w f r e q u e n c i e s a n d h i g h i m p e d a n c e a t h i g h f r e q u e n c i e s ( a b o v e 1 m h z ) i s r e c o m m e n d e d . i f t h e t r a c e s f o r m a p a 2 6 0 5 t o s p e a k e r a r e s h o r t , i t d o e s n ? t r e q u i r e o u t p u t f i l t e r f o r f c c & c e s t a n d a r d . a f e r r i t e b e a d m a y b e n e e d e d i f i t ? s f a i l i n g t h e t e s t f o r f c c o r c e t e s t e d w i t h o u t t h e l c f i l t e r . t h e f i g u r e 2 i s t h e s a m p l e f o r a d d e d f e r r i t e b e a d ; t h e f e r r i t e s h o w s c h o o s i n g h i g h i m p e d a n c e i n h i g h f r e q u e n c y . output low-pass filter
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 1 a p a 2 6 0 5 a p p l i c a t i o n i n f o r m a t i o n ( c o n t . ) the optimum decoupling is achieved by using two differ- ent types of capacitors that target on different types of noise on the power supply leads. for higher frequency transients, spikes, or digital hash on the line, a good low equivalent-series-resistance (esr) ceramic capacitor, typically 0.1 m f placed as close as possible to the device vdd pin for works best. for filtering lower frequency noise signals, a large aluminum electrolytic capacitor of 10 m f or greater placed near the audio power amplifier is recommended. power-supply decoupling capacitor, c s (cont.) l a y o u t r e c o m m e n d a t i o n f i g u r e 5 . q f n 4 x 4 - 2 0 a l a n d p a t t e r n r e c o m m e n d a t i o n 1 . a l l c o m p o n e n t s s h o u l d b e p l a c e d c l o s e t o t h e a p a 2 6 0 5 . f o r e x a m p l e , t h e i n p u t c a p a c i t o r ( c i ) s h o u l d b e c l o s e t o a p a 2 6 0 5 ? s i n p u t p i n s t o a v o i d c a u s i n g n o i s e c o u p l i n g t o a p a 2 6 0 5 ? s h i g h i m p e d a n c e i n p u t s ; t h e d e c o u p l i n g c a p a c i t o r ( c s ) s h o u l d b e p l a c e d b y t h e a p a 2 6 0 5 ? s p o w e r p i n t o d e c o u p l e t h e p o w e r r a i l n o i s e . 2 . t h e o u t p u t t r a c e s s h o u l d b e s h o r t , w i d e ( > 5 0 m i l ) , a n d s y m m e t r i c . 3 . t h e i n p u t t r a c e s h o u l d b e s h o r t a n d s y m m e t r i c . 4 . t h e p o w e r t r a c e w i d t h s h o u l d g r e a t e r t h a n 5 0 m i l . 5 . t h e q f n 4 x 4 - 2 0 a t h e r m a l p a d s h o u l d b e s o l d e r e d o n p c b , a n d t h e g r o u n d p l a n e n e e d s s o l d e r e d m a s k ( t o a v o i d s h o r t - c i r c u i t ) e x c e p t t h e t h e r m a l p a d a r e a . 0.5mm 0.28mm 2.2mm ground plane for thermal pad thermalvia diameter 0.3mm x 5 3 . 2 m m 1mm solder mask to prevent short-circuit
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 2 a p a 2 6 0 5 p a c k a g e i n f o r m a t i o n ssop-24 s y m b o l min. max. 1.75 1.24 0.15 0.25 a a2 c d e e l h millimeters b 0.20 0.30 0.635 bsc ssop-24 (150mil) 0.25 0.50 0.40 1.27 0.025 bsc min. max. inches 0.069 0.049 0.008 0.012 0.006 0.010 0.010 0.020 0.016 0.050 q 0 o 8 o 0 o 8 o 0.10 a1 0.25 0.004 0.010 e1 3.80 4.00 0.150 0.158 5.80 6.20 0.228 0.244 8.56 8.76 0.337 0.345 view a seating plane gauge plane q 0 . 2 5 l a 1 a 2 a b e d e 1 e see view a c h x 4 5 o
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 3 a p a 2 6 0 5 p a c k a g e i n f o r m a t i o n ssop-24p h x 4 5 o c see view a d2 e 2 e 1 e b e d c aaa nx a 2 a a 1 note : 1. rerfence to jedec mo-137 ae. 2. dimension "d" does not include mold flash, protrusions or gate burrs. mold flash, protrusion or gate burrs shall not exceed 6 mil per side. 3. dimension "e" does not include inter-lead flash or protrusions. inter-lead flash and protrusions shall not exceed 10 mil per side. 0 . 2 5 l view a q gauge plane seating plane s y m b o l min. max. 1.75 1.24 0.15 0.25 a a2 c d e e l h millimeters b 0.20 0.30 0.635 bsc ssop-24p 0.25 0.50 0.40 1.27 0.025 bsc min. max. inches 0.069 0.049 0.008 0.012 0.006 0.010 0.010 0.020 0.016 0.050 0 o 8 o 0 o 8 o 0.10 a1 0.25 0.004 0.010 e1 3.80 4.00 0.150 0.158 5.80 6.20 0.228 0.244 8.56 8.76 0.337 0.345 0.158 d2 3.20 4.00 0.126 0.110 e2 2.00 2.80 0.079 aaa 0.004 0.10 q
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 4 a p a 2 6 0 5 p a c k a g e i n f o r m a t i o n sop-18 s y m b o l min. max. 2.65 0.10 0.20 0.33 0.30 a a1 c d e e1 e h l millimeters b 0.31 0.51 sop-18 (300mil) 0.25 0.75 0.40 1.27 min. max. inches 0.104 0.004 0.012 0.020 0.008 0.013 0.010 0.030 0.016 0.050 q 0 o 8 o 0 o 8 o 0.012 1.27 bsc 0.050 bsc 2.05 0.081 a2 11.35 11.75 0.447 0.463 10.10 10.50 0.398 0.413 7.40 7.60 0.291 0.299 note : 1. followed from jedec ms-013 ab. 2. dimension "d" does not include mold flash, protrusions or gate burrs. mold flash, protrusion or gate burrs shall not exceed 6 mil per side . 3. dimension "e" does not include inter-lead flash or protrusions. inter-lead flash and protrusions shall not exceed 10 mil per side. view a seating plane gauge plane l q 0 . 2 5 a 1 a 2 a see view a c h x 4 5 o b e e e 1 d
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 5 a p a 2 6 0 5 p a c k a g e i n f o r m a t i o n qfn4x4-20a note : 1. followed from jedec mo-220 vggd-5. s y m b o l min. max. 1.00 0.00 0.18 0.30 2.00 2.50 0.05 2.00 a a1 b d d2 e e2 e l millimeters a3 0.20 ref qfn4x4-20a 0.35 0.45 2.50 0.008 ref min. max. inches 0.039 0.000 0.008 0.012 0.079 0.098 0.079 0.014 0.018 0.80 0.098 0.031 0.002 0.50 bsc 0.020 bsc k 0.20 0.008 3.90 4.10 0.154 0.161 3.90 4.10 0.154 0.161 e pin 1 corner e 2 k l d2 a1 a3 b a d e pin 1
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 6 a p a 2 6 0 5 application a h t1 c d d w e1 f 330 2.00 50min 24.4 0 +2.0 0 - 0.0 0 13.0+0.5 0 - 0.2 0 1.5min 20.2min 24.0 ? 0.30 1.75 ? 0.10 11.5 ? 0.10 p 0 p1 p 2 d 0 d1 t a 0 b 0 k 0 ssop - 24 4.0 ? 0.10 12.0 ? 0.10 2.0 ? 0.10 5+0.10 - 0.0 0 1.5min 0.60+0.00 - 0. 40 8.50 ? 0.10 13.50 ? 0.10 2.60 ? 0. 10 application a h t1 c d d w e1 f 330.0 ? 2.00 50 min. 16.4+2.00 - 0.00 13.0+0.50 - 0.20 1.5 min. 20.2 min. 16.0 ? 0.30 1.75 ? 0.10 7.50 ? 0.10 p 0 p1 p 2 d 0 d1 t a 0 b 0 k 0 ssop - 24p 4.0 ? 0.10 8.0 ? 0.10 2.0 ? 0.10 1.5+0.10 - 0.00 1.5 min. 0.6+0.00 - 0.40 6.40 ? 0.20 9.00 ? 0.20 2.10 ? 0.20 application a h t1 c d d w e1 f 330.0 ? 2.00 50 min. 16.4+2.00 - 0.00 13.0+0.50 - 0.20 1.5 min. 20.2 min. 16.0 ? 0.30 1.75 ? 0.10 7.5 ? 0.10 p 0 p1 p 2 d 0 d1 t a 0 b 0 k 0 sop - 18 4.0 ? 0.10 8.0 ? 0.10 2.0 ? 0.10 1.5+0.10 - 0.00 1.5 min. 0.6+0.00 - 0.40 10.9 ? 0.20 10.70 ? 0.20 3.1 ? 0.20 (mm) c a r r i e r t a p e & r e e l d i m e n s i o n s h t1 a d a e 1 a b w f t p0 od0 b a0 p2 k0 b 0 section b-b section a-a od1 p1
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 7 a p a 2 6 0 5 c a r r i e r t a p e & r e e l d i m e n s i o n s ( c o n t . ) application a h t1 c d d w e1 f 330.0 ? 2.00 50 min. 12.4+2.00 - 0.00 13.0+0.50 - 0.20 1.5 min. 20.2 min. 12.0 ? 0.30 1.75 ? 0.10 5.5 ? 0.05 p 0 p1 p 2 d 0 d1 t a 0 b 0 k 0 qfn4x4 - 20a 4.0 ? 0.10 8.0 ? 0.10 2.0 ? 0.05 1.5+0.10 - 0.00 1.5 min. 0.6+0.00 - 0.40 4.30 ? 0.20 4.30 ? 0.20 1.30 ? 0.20 (mm) package type unit quantity qfn4x4 - 20a tape & reel 3000 ssop - 24(p) tape & reel 2500 sop - 18 tape & reel 1000 d e v i c e s p e r u n i t t a p i n g d i r e c t i o n i n f o r m a t i o n ssop-24(p) user direction of feed
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 8 a p a 2 6 0 5 t a p i n g d i r e c t i o n i n f o r m a t i o n ( c o n t . ) sop-18 user direction of feed qfn4x4-20a user direction of feed
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 2 9 a p a 2 6 0 5 c l a s s i f i c a t i o n p r o f i l e profile feature sn - pb eutectic assembly pb - free assembly preheat & soak temperature min (t smin ) temperature max (t smax ) time (t smin to t smax ) ( t s ) 100 c 150 c 60 - 120 seconds 150 c 200 c 60 - 1 2 0 seconds average ramp - up rate (t smax to t p ) 3 c/second ma x. 3 c/second max. liquidous temperature ( t l ) time at l iquidous (t l ) 183 c 60 - 150 seconds 217 c 60 - 150 seconds peak package body temperature (t p ) * see classification temp in table 1 see classification temp in table 2 time (t p ) ** within 5 c of the spe cified c lassification t emperature ( t c ) 2 0 ** seconds 3 0 ** seconds average r amp - down rate (t p to t smax ) 6 c/second max. 6 c/second max. time 25 c to p eak t emperature 6 minutes max. 8 minutes max. * tolerance for peak profile temperature (t p ) is defined as a supplier minimum and a user maximum. ** tolerance for time at peak profile temperature (t p ) is defined as a supplier minimum and a user maximum. c l a s s i f i c a t i o n r e f l o w p r o f i l e s
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 7 - m a r . , 2 0 1 3 w w w . a n p e c . c o m . t w 3 0 a p a 2 6 0 5 table 1. snpb eutectic process ? classification temperatures (tc) package thickness volume mm 3 <350 volume mm 3 3 350 <2.5 mm 235 c 22 0 c 3 2.5 mm 220 c 220 c table 2. pb - free process ? classification temperatures (tc) package thickness volume mm 3 <350 volume mm 3 350 - 2000 volume mm 3 >2000 <1.6 mm 260 c 260 c 260 c 1.6 mm ? 2.5 mm 260 c 250 c 245 c 3 2.5 mm 250 c 245 c 245 c r e l i a b i l i t y t e s t p r o g r a m test item method description solderability jesd - 22, b102 5 sec, 245 c holt jesd - 22, a108 1000 hrs, bias @ t j =125 c pct jesd - 22, a102 168 hrs, 100 % rh, 2atm , 121 c tct jesd - 22, a104 500 cycles, - 65 c~150 c hbm mil - std - 883 - 3015.7 vhbm ? 2kv mm jesd - 22, a1 15 vmm ? 200v latch - up jesd 78 10ms, 1 tr ? 100ma c l a s s i f i c a t i o n r e f l o w p r o f i l e s ( c o n t . ) c u s t o m e r s e r v i c e a n p e c e l e c t r o n i c s c o r p . head office : no.6, dusing 1st road, sbip, hsin-chu, taiwan tel : 886-3-5642000 fax : 886-3-5642050 t a i p e i b r a n c h : 2 f , n o . 1 1 , l a n e 2 1 8 , s e c 2 j h o n g s i n g r d . , s i n d i a n c i t y , t a i p e i c o u n t y 2 3 1 4 6 , t a i w a n t e l : 8 8 6 - 2 - 2 9 1 0 - 3 8 3 8 f a x : 8 8 6 - 2 - 2 9 1 7 - 3 8 3 8

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