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1 ps8832 05/22/06 company confidential features ? bw for usb ports > 1.2gbps ? low thd for audio ports < 0.02% ? esd > 2kv hbm ? low i cc = 800ua ? wide v cc operating range: 2.7v to 4.2v 10% ? audio signal crosstalk @ 100khz is C90db ? audio signal off-isolation @ 100khz is C75db ? usb signal off-isolation @ 480 mbps is C39db ? packaging: (pb-free & green) : 16-contact tdfn (zj) description pi3usb412 integrates two unique pericom technology solutions into a single ic package. it offers the user a solution that switches both high speed differential signals, with high bandwidth performance, as well as low thd audio signals. for handheld applications where both a usb data transfer port and a port for an external headset is required, pericoms pi3usb412 solution can offer the ability to combine the two ports into one. with a single port, design engineers are faced with an issue of switching two completely different types of signals. one signal is a high speed differential signal, where bandwidth is the largest concern, and the second signal is an audio signal, where low thd is the largest concern. pericoms solution offers multiple channels within our pi3usb412 device. two channels are targeted for high speed usb 2.0 signals (dx), and two channels are targeted for low thd audio signals (ax). the two low thd audio signals are developed in a mux confguration. thus, the user can have two internal sources going to a single audio output. block diagram pin description pi3usb412 3.3v, usb 2.0 high speed signal switch w/ low thd channels for two audio signals truth table usb_en function 0 d i = d o 1 d i = d o = hi-z a_enx function 0 a x = 0 a x 1 a x = 1 a x ?? ? ? ? ? ? ? ????? ? ? ? ? ? ? ? ? ????? ? ? ? ? ? ? ? ? ? ? ? ? ?????? ? ?? ? ? ?? ? ?????? ????? ? ? ? ? ? ????? ? ? ? ? ?? ? ?? ? ? ?? ? ??? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ?? ?? ?? ?? ?? ?? ?? ? note: x = 1, 2 06-0077
2 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 dc electrical characteristics for usb 2.0 switching over operating range (only related to pins 1, 2, 3, 14, 15) (t a = C40c to +85c, v cc = 3.3v 10%) paramenter description test conditions (1) min. typ. (2) max. units v ih input high voltage guaranteed high level v cc = 4.2v 2.0 v v cc = 3.3v 1.6 v il input low voltage guaranteed high level 0.8 v ik clamp diode voltage v cc = max., i in = C18ma -0.7 -1.2 i ih input high current v cc = max., v in = vcc 5 a i il input low current v cc = max., v in = gnd 5 r on switch on-resis - tance (3) v cc = min., 1.25v v in v cc, i in = C40ma 4 6.5 ? r flat(on) on-resistance flat - ness (4) v cc = min., v in @ 1.5v and v cc i in = -40ma 1.0 r on on-resistance match from center ports to any other port (4) v cc = min., 1.5v v in v cc , i in = -40ma 0.9 2 company confidential storage temperature ................................................... C65c to +150c supply voltage to ground potential .............................. C0.5v to +4.6v dc input voltage ................................................... C0.5v to v cc +0.5v dc output current ............................................................... ...... 120ma power dissipation ............................................................... ........... 0.5w note: stresses greater than those listed under maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specifcation is not implied. ex - posure to absolute maximum rating conditions for extended periods may affect reliability. maximum ratings (above which useful life may be impaired. for user guidelines, not tested.) capacitance for usb 2.0 switching ( t a = 25c, f = 1 mhz) (only related to pins 1, 2, 3, 14, 15) parameters (4) description test conditions (1) typ. (2) max. units c in input capacitance v in = 0v 2.0 3.0 pf c off port i capacitance, switch off 4.0 6.0 c on switch capacitance, switch on 7.5 9.5 notes for page 2: 1. for max. or min. conditions, use appropriate value specifed under electrical characteristics for the applicable device type. 2. typical values are at v cc = 3.3v, t a = 25c ambient and maximum loading. 3. measured by the voltage drop between d i and d o pins at indicated current through the switch. on-resistance is determined by the lower of the voltages on the two ( d i & d o ) pins. 4. this parameter is determined by device characterization but is not production tested. 06-0077
3 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 company confidential power supply characteristics parameters description test conditions (3) min. typ. max. units i cc quiescent power supply current v cc = max., v in = gnd or v cc 800 a dynamic electrical characteristics over the operating range (t a = C40c to +85c, v cc = 3.3v 10%, gnd = 0v) (only related to pins 1, 2, 3, 14, 15) parameters description test conditions typ. (4) units x talk crosstalk r l = 100?, f = 250 mhz -31 db o irr off isolation -39 bw bandwidth -3db r l = 100? 700 mhz switching characteristics (only related to pins 1, 2, 3, 14, 15) parameters description test (3) conditions min. typ. (4) max. units t pd propagation delay (2) 0.25 ns t pzh , t pzl line enable time - usb_en to d n 0.5 15.0 t phz , t plz line disable time - usb_en to d n 0.5 9.0 t sk(p) skew between opposite transitions of the same output (t phl - t plh ) (2) 0.1 0.2 notes for page 3: 1. guaranteed by design. 2. the switch contributes no propagational delay other than the rc delay of the on-resistance of the switch and the load capacitance. the time constant for the switch alone is of the order of 0.25ns for 10pf load. since this time constant is much smaller than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. propagational delay of the bus switch when used in a system is determined by the driving circuit on the driving side of the switch and its interactions with the load on the driven side. 3. for max. or min. conditions, use appropriate value specifed under electrical characteristics for the applicable device type. 4. typical values are at v cc = 3.3v, t a = 25c ambient and maximum loading. 06-0077
4 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 company confidential test circuit for electrical characteristics notes: ? c l = load capacitance: includes jig and probe capacitance. ? r t = termination resistance: should be equal to z out of the pulse generator ? waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. ? all input impulses are supplied by generators having the following characteristics: prr mhz, z o = 50?, t r 2.5ns, t f 2.5ns. ? the outputs are measured one at a time with on transition per measurement. test circuit for dynamic electrical characteristics switch positions test switch t plz , t pzl (output on o-side) 6.0v t phz , t pzh (output on o-side) gnd prop delay open r t 10pf c l v cc v in v ou t 200-ohm 200-ohm 6.0v pulse generator d.u.t ? ?? ????????? ?? ?? ?? ??? ????? ?????? ???? ??????? 06-0077
5 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 company confidential voltage waveforms propagation delay times switching waveforms pulse skew - t sk(p) voltage waveforms enable and disable times input output t plh t sk(p) = i t phl C t plh i t phl 3.5v 2.5v 2.5v v ol v oh 1.5v t plz 1.25v 1.25v 2.5v v oh 0v v ol v dd/2 v dd/2 t phz t pzl t pzh output output v ol +0.3v v oh C0.3v v ol v oh sel input t plh 2.5v 2.5v 2.5v 2.5v t phl 3.5v 1.5v output v oh v ol 06-0077
6 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 company confidential dc electrical characteristics +3v supply (v cc = 2.7v to 3.3v, t a = t min to t max , unless otherwise noted. typical values are at 3v and +25c.) parameter symbol test conditions min. typ. max. units analog switch analog signal range v 1ax , v 0ax , v ax -0.3 v cc v 1 a x on-resistance r on( 0 a x ) v cc = 2.7v, i ax = 100ma, v 0 a x = 0 to v cc 0.6 0.8 ? 0 a x on-resistance r on( 1 a x ) v cc = 2.7v, i ax = 100ma, v 1a x = 0 to v cc 0.6 0.8 on-resistance match between channels ?r on v cc = 2.7v, i ax = 100ma, v 0 a x or v 1ax = 1.5v 0.01 0.06 0 a x on-resistance flatness r onf( 0 a x ) v cc = 2.7v, i a x = 100ma, v 0 a x = 0 to v cc 0.25 1 a x on-resistance flatness r onf( 1 a x ) v cc = 2.7v, i a x = 100ma, v 1 a x = 0 to v cc 0.15 1 a x or a x off leakage current i off ( 1 a x ) or i off ( 0 a x ) v cc = 3.3v, v 0 a x or v 0 a x = 3v, 0.3v, v ax = 0.3v, 3v -400 400 na a x on leakage current i a x (on) v cc = 3.3v, v 1 a x or v 0 a x = 3v, 0.3v, v ax = 0.3v, 3v, or foating -160 160 digital i/o input logic high v ih 1.3 v input logic low v il 0.6 input hysteresis v h v cc = 3.3v 200 mv input leakage cur - rent i a_en v a_en = 0 or v cc -0.5 0.5 a power supply power-supply range v cc 2.7 4.6 v audio switch (only related to pins 4, 5, 6, 7, 8, 9, 11, 12) 06-0077
7 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 company confidential capacitance parameter symbol test conditions min. typ. max. units 0 a x off capacitance c (off) f = 1 mhz, see test circuit figure 7. 35 pf 1 a x off capacitance c (off) f = 1 mhz, see test circuit figure 7. 35 0 a x on capacitance c (on) f = 1 mhz, see test circuit figure 8. 95 1 a x on capacitance c (on) f = 1 mhz, see test circuit figure 8. 95 switch and ac characteristics (only related to pins 4, 5, 6, 7, 8, 9, 11, 12) parameter symbol test conditions min. typ. max. units turn-on time t on v cc = 2.7v, v 1 a x or v 0 a x = 1.5v, r l = 50?, c l = 35pf, see test circuit figure 1 & 2. 15 25 ns turn-off time t off v cc = 2.7v, v 1 a x or v 0 a x = 1.5v, r l = 50?, c l = 35pf, see test circuit figure 1 & 2. 4 10 break-before-make delay t bbm v cc = 2.7v, v 1 a x or v 0 a x = 1.5v, r l = 50?, c l = 35pf, see test circuit figure 3. 20 charge injection q a x = 0, r s = 0, c l = 1nf, see test circuit figure 4. 55 pc off-isolation o irr c l = 5pf, r l = 50?, f = 100khz, v ax = 1 v rms , , see test circuit figure 5. -75 db crosstalk x talk c l = 5pf, r l = 50?, f = 100khz, v ax = 1 v rms , see test circuit figure 6. -90 3db bandwidth f 3db see test circuit figure 9. 60 mhz 06-0077
8 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 company confidential figure 1. ac test circuit figure 2. ac waveforms test circuits and timing diagrams (only related to pins 5, 6, 7, 8, 9, 11, 12) logic input w aveforms inverted for switches that have opposite logic t on v out t r t f t off 90 % 90 % < 5ns < 5ns 50 % switch output logic input v ih v il 0 v of f on o ff note: 1. unused input must be grounded. figure 3. break before make interval timing ????? ????? ? ? ?? ? ?? ??? ????? ? ? ?????????????????????????? ?? ??? ???? ????? ? ? ? ? ????? ? ? ? ? ?? ? ? ? ?? ? ??? ???? ? ? ???? ? ? ?? ? ? ??? ? ??? ? ????? ? ??? ? ???? ????? ? ? ????? ? ? ? ? ? ? ? ?? ????? ????? ? ??? ?? ? 06-0077
9 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 company confidential figure 4. charge injection test figure 5. off isolation figure 6. crosstalk figure 7. channel off capacitance figure 8. channel on capacitance ? ? ??? ? ? ????? ? ??? ? ??? ????? ????? ????? ????? ???? ? ? ? ??? ??? ? ? ? ??? ??? ?? ? ?? ? ? ??? ? ? ? ???? ??? ? ?? ? ?? ??????????? ?????? ? ?? ? ? ?? ? ?????? ????????? ? ? ??? ?? ? ???????? ? ? ????? ? ? ? ???? ??? ? ?? ? ?? ??????????? ?????? ? ?? ? ? ?? ? ?????? ????????? ? ? ??? ?? ? ???????? ? ? ????? ? ? ? ??????????? ????? ???? ??? ????????? ? ?? ? ?? ??????????? ?????? ? ?? ? ? ????? ? ? ? ??????????? ????? ???? ??? ? ?? ? ?? ????????? ??????????? ?????? ? ?? ? ? ????? ? ? ? 06-0077
1 0 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 company confidential figure 9. bandwidth ???? ??? ??????????? ?????? ? ?? ? ?? ? ?? ?? ? ?????? ????????? ?? ? ???? ???? ? ? ????? ? ? ? application information usb 2.0 signals + high fidelity audio signals figure 10: usb 2.0 high-speed (480mbps) signal test set-up usb 2.0 hs data + audio 06-0077
1 1 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 company confidential figure 11: usb 2.0 high-speed (480mbps) tp1, left eye, and tp5, right eye, tested with no pi3usb412 in the signal path figure 12: usb 2.0 high-speed (480mbps) tp1, left eye, and tp5, right eye, tested with only usb data signals connected (audio signals are left not connected with no inductors. 06-0077
1 2 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 company confidential figure 13: usb 2.0 high-speed (480mbps) tp1, left eye, and tp5, right eye, tested with pi3usb412 in the signal path with analog signals off and 9.3uh inductors for l1 and l2 figure 14: usb 2.0 full-speed (12mbps) signal test set-up 06-0077
1 3 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 company confidential figure 15: usb 2.0 full-speed (12mbps) tp1, left eye, and tp4, right eye, tested with no pi3usb412 in the signal path figure 16: usb 2.0 full-speed (12mbps) tp1, left eye, and tp4, right eye, tested with only usb data signals connected (au - dio signals are left not connected with no inductors). figure 17: usb 2.0 full-speed (12mbps) tp1, left eye, and tp4, right eye, tested with pi3usb412 in the signal path with analog signals off and 9.3uh inductors for l1 and l2 06-0077
1 4 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 company confidential figure 18: high fidelity audio signal test setup. in figure 18, the test fow is to send a sine wave signal from 30hz to 30khz from the function generator (hp8116a) to the pericom test board. pericom took measurements on three test points using a tektronix scope (tds694c). the three test points were tp2 (channel 1 on scope), tp3 (channel 2 on scope), and tp4 (channel 3 on scope). r1 represents the termination of the headset speaker. figure 19: see figure 18 for test setup. r1=12k and the sine wave on the left plot is 30khz, while the sine wave on the right is 30hz. channel 1 (black)=tp2, channel 2 (green)=tp3, channel 3(red)=tp4 06-0077
1 5 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 company confidential figure 21: r1=4 ohm and the sine wave on the left plot is 30khz, while the sine wave on the right is 30hz. channel 1 (black)=tp2, channel 2 (green)=tp3, channel 3(red)=tp4 figure 20: r1=15-ohm, left 30khz, right 30hz, channel 1 (black)=tp2, channel 2 (green)=tp3, channel 3(red)=tp4 06-0077
1 6 pi3usb412 3.3v, usb 2.0 high-speed signal switch w/ low thd channels for two audio signals ps8832 05/22/06 company confidential pericom semiconductor corporation ? 1-800-435-2336 ? www.pericom.com ordering information ordering code package code package description package top mark PI3USB412ZJEX zj pb-free & green, 16-contact tdfn u2e notes: ? thermal characteristics can be found on the company web site at www .pericom.com/packaging/ ? e = pb-free and green ? adding an x suffx = tape/reel ? description: 16-contact, thin dual-in-line flat no-lead (tdfn) package code: zj (zj16) document control #: pd-2042 revision: b ??????? ???????????????????????????????????? ???????????????????????????? ???????????????????????????????????????????????????????????????????????????? ???????????????? date: 03/30/06 ????????? ? ???? ??????????? ???? ????????????????? ?? ???? ? 06-0077

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