SIT9121 1 - 220 mhz high performa n ce differential oscillator the sma r t t i m i ng cho i c e ? features applications ? any frequency between 1 mhz and 220 mhz accurate to 6 decimal places ? 10gb ethernet, sonet, sata, sas, fibre channel, pci - express ? lvpecl and lvds output signaling types ? telecom, networking, instrumentation, storage, servers ? 0.6ps rms phase jitter (random) over 12 khz to 20 mhz bandwidth ? frequency stability as low as 10 ppm ? industrial and extended commercial temperature ranges ? industry - standard packages: 3.2x2.5, 5.0x3.2 and 7.0x5.0 mmxmm ? for frequencies higher than 220 mhz, refer to sit9122 datasheet electrical characteristics parameter and conditions symbol min. typ. max. unit condition lvpecl and lvds, common electrical characteristics supply voltage vdd 2.97 3.3 3.63 v output frequency range f 1 ? 220 mhz frequency stability f_stab - 10 ? +10 ppm inclusive of initial tolerance, operating temperature, rated power supply voltage, and load variations - 20 ? +20 ppm - 25 ? +25 ppm - 50 ? +50 ppm first year aging f_aging1 - 2 ? +2 ppm 25c 10 - year aging f_aging10 - 5 ? +5 ppm 25c operating temperature range t_use - 40 ? +85 c industrial - 20 ? +70 c extended commercial input voltage high vih 70% ? ? vdd pin 1, oe or st input voltage low vil ? ? 30% vdd pin 1, oe or st input pull - up impedance z_in ? 100 250 k pin 1, oe logic high or logic low, or st logic high 2 ? ? m pin 1, st logic low start - up time t_start ? 6 10 ms measured from the time vdd reaches its rated minimum value. resume time t_resume ? 6 10 ms in standby mode, measured from the time st pin crosses 50% threshold. duty cycle dc 45 ? 55 % contact sitime for tighter duty cycle lvpecl, dc and ac characteristics current consumption idd ? 61 69 ma excluding load termination current, vdd = 3.3v or 2.5v oe disable supply current i_oe ? ? 35 ma oe = low output disable leakage current i_leak ? ? 1 standby current i_std ? ? 100 a st = low, for all vdds maximum output current i_driver ? ? 30 ma maximum average current drawn from out+ or out - output high voltage voh vdd - 1.1 ? vdd - 0.7 v see figure 1(a) output low voltage vol vdd - 1.9 ? vdd - 1.5 v see figure 1(a) output differential voltage swing v_swing 1.2 1.6 2.0 v see figure 1(b) rise/fall time tr, tf ? 300 700 ps 20% to 80%, see figure 1(a) oe enable/disable time t_oe ? ? 115 ns f = 212.5 mhz - for other frequencies, t_oe = 100ns + 3 period rms period jitter t_jitt ? 1.2 1.7 ps f = 100 mhz, vdd = 3.3v or 2.5v ? 1.2 1.7 ps f = 156.25 mhz, vdd = 3.3v or 2.5v ? 1.2 1.7 ps f = 212.5 mhz, vdd = 3.3v or 2.5v rms phase jitter (random) t_phj ? 0.6 0.85 ps f = 156.25 mhz, integration bandwidth = 12 khz to 20 mhz, all vdds lvds, dc and ac characteristics current consumption idd ? 47 55 ma excluding load termination current, vdd = 3.3v or 2.5v oe disable supply current i_oe ? ? 35 ma oe = low differential output voltage vod 250 350 450 mv see figure 2 sitime corporation 990 almanor avenue, sunnyvale, ca 94085 (408) 328 - 4400 www.sitime.com rev. 1.07 revised jan uary 4 , 2016
SIT9121 1 - 220 mhz high performa n ce differential oscillator the sma r t t i m i ng cho i c e ? re v . 1 . 07 page 2 of 8 w w w . s i t i me . com electrical characteristics (continued) parameter and conditions symbol min. typ. max. unit condition lvds, dc and ac characteristics (continued) output disable leakage current i_leak ? ? 1 a oe = low standby current i_std ? ? 100 a st = low, for all vdds vod magnitude change ? offset voltage vos 1.125 1.2 1.375 v see figure 2 vos magnitude change ? rise/fall time tr, tf ? 495 700 ps 20% to 80%, see figure 2 oe enable/disable time t_oe ? ? 115 ns f = 212.5 mhz - for other frequencies, t_oe = 100ns + 3 period rms period jitter t_jitt ? 1.2 1.7 ps f = 100 mhz, vdd = 3.3v or 2.5v ? 1.2 1.7 ps f = 156.25 mhz, vdd = 3.3v or 2.5v ? 1.2 1.7 ps f = 212.5 mhz, vdd = 3.3v or 2.5v rms phase jitter (random) t_phj ? 0.6 0.85 ps f = 156.25 mhz, integration bandwidth = 12 khz to 20 mhz, all vdds pin description top view oe/st 1 6 vdd nc 2 5 out - gnd 3 4 out+ absolute maximum attempted operation outside the absolute maximum ratings may cause permanent damage to the part. actual performance of the ic is only guaranteed within the operational specifications, not at absolute maximum ratings. parameter min. max. unit storage temperature - 65 150 c vdd - 0.5 4 v electrostatic discharge (hbm) ? 2000 v soldering temperature (follow standard pb free soldering guidelines) ? 260 c thermal consideration package ja, 4 layer board (c/w) jc, bottom (c/w) 7050, 6 - pin 142 27 5032, 6 - pin 97 20 3225, 6 - pin 109 20 environmental compliance parameter condition/test method mechanical shock mil - std - 883f, method 2002 mechanical vibration mil - std - 883f, method 2007 temperature cycle jesd22, method a104 solderability mil - std - 883f, method 2003 moisture sensitivity level msl1 @ 260c p in map fu n c tionality 1 oe i nput h o r o pe n : speci f ied f r equ e ncy ou t put l: ou t put i s hi g h i mped a nce st i nput h or op e n: speci f ied f req u ency o u t p ut l: device g oes t o sleep mode. s upply cur r ent re d uces to i _ s t d. 2 nc na no conn e c t ; leave it fl o a t ing or con n ect t o gnd f o r be t t e r h e at d i s si p a t ion 3 gnd power vdd p ower su p ply grou n d 4 out+ o utput oscillator o u tp u t 5 ou t - o utput complem e n t ary oscillator outp u t 6 vdd power power sup p ly vol t a ge
SIT9121 1 - 220 mhz high performa n ce differential oscillator the sma r t t i m i ng cho i c e ? re v . 1 . 07 page 3 of 8 w w w . s i t i me . com waveform diagrams out - out+ gnd figure 1(a). lvpecl voltage levels per differential pin (out+/out -) 0 v figure 1(b). lvpecl voltage levels across differential pair out - 80% 80% vod out+ 20% 20% vos tr tf gnd figure 2. lvds voltage levels per differential pin (out+/out -) 8 0 % 8 0 % 2 0 % 20% voh v o l tr tf v _ s w i n g t
SIT9121 1 - 220 mhz high performa n ce differential oscillator the sma r t t i m i ng cho i c e ? re v . 1 . 07 page 4 of 8 w w w . s i t i me . com termination diagrams lvpecl: vdd vtt = vdd ? 2.0 v figure 3. lvpecl typical termination vdd vdd= 3.3v => r1 = 100 to 150 ? vdd= 2.5v => r1 = 75 ? 100 nf out+ z0 = 50 ? d+ lvpecl driver receiver device 100 nf out - z0 = 50 ? d - r1 r1 50 ? 50 ? vtt figure 4. lvpecl ac coupled termination figure 5. lvpecl with thevenin typical termination v dd = 3 . 3 v = > r 1 = r 3 = 133 ? and r 2 = r4 = 82 ? ? and r 2 = r4 = 6 2. 5 ? ou t + z 0 = 5 0 ? d+ l v p e c l dr i v er r ec e i v er d ev i ce o u t - z 0 = 50 ? d - r2 r4 o u t + z 0 = 5 0 ? d + l vp ec l d r i v e r r e ce i ve r d e v i c e o u t - z 0 = 5 0 ? d - 5 0 ? 5 0 ?
SIT9121 1 - 220 mhz high performa n ce differential oscillator the sma r t t i m i ng cho i c e ? re v . 1 . 07 page 5 of 8 w w w . s i t i me . com lvds: figure 6. lvds single termination (load terminated) vdd ou t + z 0 = 5 0 ? d+ l v d s d r iv e r 1 0 0 ? re cei v e r d e v i c e ou t - z 0 = 5 0 ? d -
SIT9121 1 - 220 mhz high performa n ce differential oscillator the sma r t t i m i ng cho i c e ? re v . 1 . 07 page 6 of 8 w w w . s i t i me . com dimensions and patterns p ackage s i ze ? d im ensions (un i t: mm ) [1] reco m m ended land pa t tern (unit: m m ) [2] 3.2 x 2.5x 0.75 mm 0 . 750.05 yxxxx 0 .9 #2 #5 #2 #5 #1 #3 #4 #6 #1 #3 #4 #6 3 .20.05 2 .50.05 0 .7 0 .6 2 .20 1 . 05 0 .65 1.00 2.25 1.6 5.0 x 3.2 x 0.75 mm 0 .750.05 yxxxx 1.20 #2 #5 #2 #5 #1 #3 #4 #6 #1 #3 #4 #6 7.0 x 5.0x 0.90 mm 5.00.10 1.40 1.10 5.08 7.00.10 2.60 #1 #3 #6 #4 #1 #3 #6 #4 0.90 0.10 #2 #5 #2 #5 yxxxx 5.08 1.60 1.60 3.80 notes: 1. top marking: y denotes manufacturing origin and xxxx denotes manufacturing lot number. the value of ?y? will depend on the assembly location of the device. 2. a capacitor of value 0.1 f between vdd and gnd is recommended.
SIT9121 1 - 220 mhz high performa n ce differential oscillator the sma r t t i m i ng cho i c e ? re v . 1 . 07 page 7 of 8 w w w . s i t i me . com p a r t fa m i l y ? s i t9121? r e v is i o n le tt e r ? a ? is th e r ev i sio n o f si li co n s i gnall i n g type ? 1 ? = l v pe c l ? 2 ? = l v d s f r equenc y s ta b i li t y ? f ? f o r 1 0 p p m ?1 ? f o r 2 0 p p m ?2 ? f o r 2 5 p p m ?3 ? f o r 5 0 p p m te m per at ur e r ange ? i ? i ndu s t r i a l , - 4 0 t o 85 c ? c ? e x t e nd e d c o m m erc i a l , - 2 0 t o 7 0 c p a ck a g e siz e ? b ? 3 . 2 x 2 . 5 m m x m m ? c ? 5. 0 x 3. 2 m m x m m ? d ? 7. 0 x 5. 0 m m x m m ordering information SIT9121ac - 1c2 - 33e125.000000t feature pin ?e? for output enable ?s? for standby voltage supply ?25? for 2.5v 10% ?33? for 3.3v 10% ?xx? for 2.25v to 3.63v ordering codes for supported tape & reel packing method device size 8 mm t&r (3ku) 8 mm t&r (1ku) 8 mm t&r (250u) 12 mm t&r (3ku) 12 mm t&r (1ku) 12 mm t&r (250u) 16 mm t&r (3ku) 16 mm t&r (1ku) 16 mm t&r (250u) 7.0 x 5.0 mm ? ? ? ? ? ? t y x 5.0 x 3.2 mm ? ? ? t y x ? ? ? 3.2 x 2.5 mm d e g t y x ? ? ? frequencies not supported ra n ge 1: from 20 9 . 0 000 0 1 mhz to 2 1 0. 9 999 9 9 mhz pac k agin g : ? t ? , ? y ? , ? x ? , ? d ? , ? e ? o r ? g ? r e f e r t o ta b l e be lo w fo r pa c k ing m e thod l ea v e b l an k f o r bu lk fr e q u e ncy 1 . 0000 0 0 mh z t o 220 . 0 0 000 0 m h z
SIT9121 1 - 220 mhz high performa n ce differential oscillator the sma r t t i m i ng cho i c e ? re v . 1 . 07 page 8 of 8 w w w . s i t i me . com revision history s version release date change summary 1.01 2/20/13 original 1.02 12/3/13 added input specifications, lvpecl/lvds waveforms, packaging t&r options 1.03 2/6/14 added 8mm t&r option and 10 ppm 1.04 4/8/14 included 1.8v option for lvds output only 1.05 7/30/14 included thermal consideration table 1.06 10/20/14 modified thermal consideration values. preliminary removed from the title 1.07 1/4/16 removed 1.8v option disclaimer: this document is not an official sitime datasheet. it is exported from a master framemaker document for your convenience, to simpl ify the generation of your datasheet. the information in the official sitime datasheet on sitime?s website will be the final refere nce in case of conflicting information.
|
