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april 2007 ? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability click to see this datasheet in simplified chinese! fsa201 ? usb2.0 full-speed and audio switches with negative signal capability features ? 3 ? typical on resistance ? -3db bandwidth: > 250mhz ? low power consumption ? packaged in pb-free 10-pin msop and 10-lead micropak? (1.6 x 2.1mm) ? power-off protection on common d+/r, d-/l ports ? automatically detects v bus for switch path selection applications ? cell phone, pda, digital camera, and notebook ? lcd monitor, tv, and set-top box description the fsa201 is a double-pole, double throw (dpdt) multiplexer that combines a low-distortion audio and a usb2.0 full-speed (fs) switch path. this configuration enables audio and usb data to share a common connector port. the architecture is designed to allow audio signals to swing below ground. this means a common usb and headphone jack can be used for personal media players and similar portable peripheral devices. since usb2.0 is an industry standard for shared data- path in portable devices, the fsa201 also incorporates a v bus detection capability. the fsa201 includes a power-off feature to minimize current consumption when v bus is not present. this power-off circuitry is available for the common d+/r, d-/l ports only. typical applications involve switching in portables and consumer applications, such as cell phones, digital cameras, and notebooks with hubs or controllers. ordering information part number package number pb-free packing description fsa201l10x mac010a yes 10-lead micropak, jedec mo-255, 1.6 x 2.1mm fsa201mux mua10a yes 10-lead msop, jedec mo-187, 3.0mm wide vbus vaudio switch select control circuitry d+/r d-/l d+ r d- l asel r pd gnd - figure 1. fsa201 analog symbol
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 2 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability pin assignments gnd vbus 10 l d- d+ r vaudio d+/r asel d-/l 2 1 3 4 5 9 8 7 6 10 - - 2 1 3 4 2 1 3 4 5 9 8 7 6 9 8 7 6 vbus gnd 110 9 8 7 6 5 4 3 2 d+ d- r l d+/r d-/l vaudio asel figure 2. micropak? 10-pin figure 3. msop 10-pin pin descriptions pin # name description 1, 2 d+, d- usb data bus input sources 6 v audio power supply (audio) 3, 4 r, l audio right and left input sources 9 a sel audio select to override auto usb detect when v audio supply is present 10 v bus power supply (usb) and auto usb switch-path select 8, 7 d+/r, d-/l usb and audio common connector ports truth table a sel (1) v audio v bus l, r d+, d- low low low off off low low high (2) off on low high (2) low on off low high (2) high (2) off on high low low off off high low high (2) off on high high (2) low on off high high (2) high (2) on off notes: 1. a sel - internal resistor to gnd provides auto-v bus detect if there is no external connection. forcing a sel high when v audio is present overrides the usb path even if v bus is present. 2. h - value is the threshold as defined to meet usb2.0 v bus requirements and audio supply threshold in a system (see dc tables).
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 3 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability functional description the fsa201 is a combined usb and audio switch that enables sharing the d+/d- lines of a usb connector with stereo audio codec outputs. the switch is optimized for full-speed usb signals and includes an automatic v bus -detection circuit. when a usb connector, rather than a headphone, is connec ted to the ultra-portable device the switch is automatically configured for full- speed usb data transfer. if no v bus is detected, and yet v audio is present, the switch is configured for the low- distortion audio switch path. the audio switch path also handles negative signals (down to -2v), which eliminates the need for large coupling capacitors. for those applications where the v bus is generated as a self-powered device or where v bus is not removed, the a sel pin provides the ability to switch, under software control, to the audio path. the a sel pin is internally terminated by a resistor to gnd (typical value 3m ) and requires no connection for the standard ultra-portable (cell-phone, mp3, or portable media player). in an application where the supply to the fsa201 v bus pin is not guaranteed to be removed, a gpio pin can be used to switch out of full-speed usb mode into audio mode, using the a sel pin. the fsa201 v bus pin must be connected directly to v bus or a supply > 3.8v, not an ldo regulated down to 3.6v or a v bat -generated supply that may fall below 3.8v in normal operation (see the application diagram). application diagram v bus v audio switch select control circuitry d+/r d-/l d+ r d- l a sel r pd gnd gnd 5v audio codec fs-usb source 3.0v - 3.6v usb mini -ab connecto r v bus id figure 4. application diagram
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 4 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability absolute maximum ratings stresses exceeding the absolute maximum ratings may damage the device. the device may not function or be operable above the recommended operating conditions and stre ssing the parts to these levels is not recommended. in addition, extended exposure to stresses above the recommend ed operating conditions may affect device reliability. the absolute maximum ratings are stress ratings only. symbol parameter conditions v audio supply voltage -0.5v to 6.0v v bus supply voltage -0.5v to 6.0v r, l pins (v audio - 7.0v) to (v audio + 0.3v) v sw switch i/o voltage (3) d+, d-, d+/r, d-/l pins (v bus - 7.0v) to (v bus + 0.3v) a sel control input voltage (3) -0.5v to + 6.0v i ik input clamp diode current - 50ma usb 50ma i sw switch i/o current (continuous) audio 250ma usb 100ma i swpeak peak switch current (pulsed at 1ms duration, <10% duty cycle) audio 500ma t stg storage temperature range -65 c to +150 c t j maximum junction temperature +150 c t l lead temperature (soldering, 10 seconds) +260 c i/o to gnd 10kv human body model (jedec: jesd22-a114) all other pins 8kv esd charged device model (jedec: jesd22-c101) 2kv note: 3. the input and output negative rati ngs may be exceeded if the input and output diode current ratings are observed. recommended operating conditions the recommended operating conditions table defines th e conditions for actual device operation. recommended operating conditions are specified to en sure optimal performance to the datash eet specifications. fairchild does not recommend exceeding them or designing to absolute maximum ratings. symbol parameter minimum maximum v audio supply voltage 2.7v 3.6v v bus supply voltage 4.25v 5.50v a sel control input voltage 0v v audio v sw switch i/o voltage v audio ? 6.5v v audio ? 0.3v t a operating temperature -40oc 85oc ja thermal resistance (free air) micropak 10 330oc / w (estimated)
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 5 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability dc electrical characteristics all typical values are at 25o c unless otherwise specified. t a = - 40oc to +85oc symbol parameter v audio (v) conditions min. typ. max. unit common pins v ik clamp diode voltage 2.7 i ik = -18ma -1.2 v ih control input voltage high 2.7 to 3.6 1.3 v il control input voltage low 2.7 to 3.6 0.5 v i in a sel input high current 3.6 v cntrl = 0v to 3.6v -3 3 a i off power off leakage current (common port only d+/r, d-/l) v audio = v bus = 0v common port (d+/r, d-/l) v sw = 0v to 5.5v 1 a i no(0ff) off leakage current of port d+, d-, r, l 3.6 v bus = 0v, 5. 5v d+/r, d-/l = 0.3v, v audio ? 0.3v d+, d-, r, l = 0.3v, v audio ?0.3v or floating see figure 14 -50 10 50 na i nc(0n) on leakage current of port d+/r or d-/l 3.6 v bus = 0v, 5.5v d+/r, d-/l = 0.3v, v audio ? 0.3v d+, d-, r, l = floating see figure 15 -100 50 100 na usb switch path v bus (v) usb analog signal range 0 3.6 v r onusb fs switch on resistance (4) 4.25 v d+/d - = 0v, 3.0v, i on = -8ma see figures 6, 13 3 6 ? ? r onusb fs delta r on (4,6) 4.25 v d+/d- = 3v, i on = -8ma 0.35 ? audio switch path v audio (v) audio analog signal range v audio ? 6.5 v audio v r onaudio audio switch on resistance (7) 2.7 v l/r = -2v, 0v, 0.7v, v audio -0.7v, v audio i on = -100ma, v bus = 0v see figures 5, 13 0.5 1.0 ? ? r onaudio audio delta r on (4) 2.7 v l/r = 0.7v i on = -100ma 0.01 0.1 ? r flat(audio) audio r on flatness (5) 2.7 v l/r = -2v, 0v, 0.7v, 2v, 2.7v i on = -100ma 0.35 ? notes: 4. ? r on =r on max ? r on min measured at identical v cc , temperature, and voltage. worst-case signal path, audio or usb channel, is characterized. 5. flatness is defined as the difference between the maximum and minimum values of on resistance over the specified range of conditions. 6. guaranteed by characteriza tion, not production tested. 7. on resistance is determined by the voltage drop between t he a and b pins at the indicated current through the switch.
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 6 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability dc electrical characteristics (continued) all typical values are at 25o c unless otherwise specified. t a = - 40oc to +85oc symbol parameter v audio (v) conditions min. typ. max. unit power supply v busth v bus threshold voltage 3.2 3.8 v v audioth v audio threshold 0.5 1.5 v i cc(audio) quiescent supply current (audio) 3.0 v asel = 0 to v audio , i out = 0 10 a i cc(vbus) quiescent supply current (v bus ) v asel = 0 to v audio , i out = 0 v bus = 5.5v 20 a v asel = 2.6v, v bus = floating 15 i cct increase in i cc current per control voltage and v cc 3.0 v asel = 1.8v, v bus = floating 18 a
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 7 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability ac electrical characteristics all typical value are for v audio = 3.3v and v bus = 5.0 at 25oc unless otherwise specified. t a = - 40c to +85c symbol parameter v audio /v bus (v) conditions min. typ. max. unit t onaudio1 turn-on time v audio to output v bus = 0v v d+/r, d-/l = 1.0v r l = 50 ? , c l = 50pf see figures 16, 18 10 s t offaudio1 turn-off time v bus to output v audio = 2.7 for v bus v d+/r, d-/l = 1.0v r l = 50 ? , c l = 50pf see figures 16, 18 10 s t onaudio2 turn-on time a sel to output v bus = 4.25v v audio = 2.7 v d+/r, d-/l = 1.0v r l = 50 ? , c l = 50pf see figures 16, 17 1 s t offaudio2 turn-off time a sel to output v bus = 4.25v v audio = 2.7 v d+/r, d-/l = 1.0v r l = 50 ? , c l = 50pf see figures 16, 18 1 s t onaudio3 turn-on time v bus to output v audio = 2.7 v d+/r, d-/l = 1.0v r l =50 ? , c l = 50pf see figures 16, 17 10 s t onusb turn-on time v usb to output v audio = 2.7 v d+/r, d-/l = 1.0v r l = 50 ? , c l = 50pf see figures 16, 18 10 s t offusb turn-off time v usb to output v audio = 2.7 v d+/r, d-/l = 1.0v r l = 50 ? , c l = 50pf see figures 16, 18 10 s t pdusb usb switch propagation delay (8) v audio = 2.7 v bus = 4.25v r l = 50 ? , c l = 50pf see figure 19 0.25 ns oirr usb off-isolation - usb v audio = 2.7 v bus = 4.25v f = 6mhz, r t = 50 ? , c l = 0pf see figures 8, 23 -55 db oirr a off-isolation - audio v audio = 2.7 v bus = 4.25v f = 6mhz, r t = 50 ? , c l = 0pf see figures 7, 23 -37 db xtalk usb non-adjacent channel crosstalk - usb v audio = 2.7 v bus = 4.25v f = 6mhz, r t = 50 ? , c l = 0pf see figures 10, 24 -49 db xtalk a non-adjacent channel crosstalk - audio v audio = 2.7 v bus = 4.25v f = 6mhz, r t = 50 ? , c l = 0pf see figures 9, 24 -39 db bw -3db bandwidth v audio = 2.7 v bus = 4.25v r t = 50 ? , c l = 0pf, signal 0dbm see figures 11, 12, 22 400 mhz thd total harmonic distortion v audio = 2.7 v bus = 0v f = 20hz to 20khz, r l = 32 ? , v r,l = 2v pp see figure 27 0.05 % psrr power supply rejection ratio v audio = 3.3 v bus = 0v f = 217hz on v audio v r,l = 1.0v, r t = 32 ? , v ripple = 600mv pp -56 db note: 8. guaranteed by characteriza tion, not production tested.
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 8 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability usb full-speed related ac electrical characteristics t a = -40oc to +85oc symbol parameter v audio / v bus (v) conditions min. typ. max. unit t sk(o) channel-to-channel skew (9) v audio = 2.7v v bus = 4.25v t r = t f = 12ns (10-90%) at 6mhz c l = 50pf, r l = 50 ? see figures 20, 21 150 ps t sk(p) skew of opposite transitions of the same output (9) v audio = 2.7v v bus = 4.25v t r = t f = 12ns (10-90%) at 6mhz c l = 50pf, r l = 50 ? see figures 20, 21 150 ps t j total jitter (9) v audio = 2.7v v bus = 4.25v r l = 50 ? , c l = 50pf, t r = t f = 12ns (10-90%) at 12mbps (prbs = 2 15 ? 1) 1.6 ns note: 9. guaranteed by characteriza tion, not production tested. capacitance t a = -40oc to +85oc symbol parameter v audio / v bus (v) conditions min. typ. max. unit c in (asel) control pin input capacitance (a sel ) v audio = 2.7v v bus = 4.25v v bias = 0.2v 2.5 pf v audio = 2.7v v bus = 4.25v a sel = 0v (c onusb ) v bias = 0.2v f = 6mhz see figure 26 25 c on(d+/r, d-/l) d+/r, d-/l (common port) on capacitance v audio = 2.7v v bus = 4.25v a sel = 2.7v (c onaudio ) v bias = 0.2v f = 6mhz see figure 26 29 pf c off(d+, d-) usb input source off capacitance v audio = 2.7v v bus = 4.25v a sel = 2.7v f = 6mhz see figure 25 5 pf c off(r/l) audio input source off capacitance v audio = 2.7v v bus = 4.25v a sel =0v f = 6mhz see figure 25 17 pf
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 9 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability typical characteristics figure 5. r on audio characterization (r on audio r, v audio = 2.7v) figure 6. r on usb characterization (r on usb d+) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 -4 -3 -2 -1 0 1 2 3 4 v in (v) r on (ohms) 25c -40c 85c 0 1 2 3 4 5 6 7 -1 0 1 2 3 4 5 v in (v) r on ( ohms) - 40c 25c 85c
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 10 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability typical characteristics (continued) -80 -70 -60 -50 -40 -30 -20 -10 0 1 10 100 1000 frequency (mhz) off isolation (db) figure 7. off-isolation (audio) charac terization, frequency response at v cc (v audio ) = 2.7v 1 10 100 1000 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 frequency (mhz) off isolation (db) figure 8. off-isolation (usb) charac terization, frequency response at v cc (v bus ) = 4.25v
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 11 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability typical characteristics (continued) -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1 10 100 1000 frequency (mhz) crosstalk (db) figure 9. non-adjacent channel crosstalk (audio) characterization at v cc (v audio ) = 2.7v figure 10. non-adjacent channel crosstalk (usb) characterization at v cc (v bus ) = 4.25v
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 12 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability typical characteristics (continued) figure 11. bandwidth characterization, frequency response at c l = 0pf, v cc (v audio ) = 2.7v figure 12. bandwidth characterization, frequency response at c l = 0pf, v cc (v bus ) = 4.25v
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 13 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability test diagrams dn or r/l d+/r or d-/l v cntrl = fn (v audio and v bus ) i on v on r on = v on / i on gnd v sw gnd i v v v = fn ( v audio and v bus ) d+/r or d-/l d+, d- or r/l a i (off) v sw gnd cntrl - - a i v gnd a i a i v gnd v figure 13. on resistance figure 14. off leakage v cntrl = fn (v audio and v bus ) i a(on) v sw gnd a d+, d- or r/l d+/r or d-/l v v v a - r l , r s and c l are function of application environment (see ac tables for specific values) c l includes test fixture and stray capacitance gnd r s v cntrl = fn (v audio and v bus v sw gnd r l c l gnd v out d+, d- or r,l d+/r or d-/l s ) v gnd v gnd - - figure 15. on leakage figure 16. ac test circuit load -v asel t rise = 2.5ns gnd 3v 90% 90% 10% 10% t fall = 2.5ns 50% 50% output - v out 90% v oh v ol t on t off 90% input - 3 - v cntrl = fn (v audio and v bus ) input - v cntrl t rise = 1s gnd vbus vth(max) 90% 10% 10% t fall = 1s output - v out 90% v oh v ol t on t off 90% vth(min) vth = v busth or v audioth - ) figure 17. turn-on / turn-off waveforms (a sel ) figure 18. turn-on / turn-o ff waveforms (usb/audio)
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 14 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability test diagrams (continued) t rise =12ns gnd 3v 90% 90% 10% 10% t fall =12ns 50% 50% input ? v d+/d- output- v out 50% 50% v oh v ol t plh t phl - - - - t rise =12ns gnd 3v 90% 90% 10% 10% t fall =12ns 50% 50% input ? v d+/d- output- v out 50% 50% v oh v ol t plh t phl - 50% figure 19. usb switch propagation delay waveforms figure 20. pulse skew: t sk(p) = | t phl ? t plh | t rise =12ns gnd 3v 90% 90% 10% 10% t fall =12ns 50% 50% input ? v d+/d- output1- v out 50% 50% v oh v ol t plh1 t phl1 output2- v out 50% 50% v oh v ol t plh2 t phl2 t sk (o) - 50% - 50% figure 21. output skew: t sk(o) = | t plh1 ? t plh2 | or | t phl1 ? t phl2 |
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 15 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability test diagrams (continued) v out gnd gnd r t gnd gnd v s r s network analyzer v cntrl gnd r s and r t are functions of the application environment (see ac tables for specific values ) v in v cntrl =fn (v audio and v bus ) v out gnd gnd v s v s s figure 22. usb bandwidth r s and r t are functions of the application environment (see ac tables for specific values) v out gnd gnd r t gnd gnd v s r s network analyzer r t gnd v cntrl gnd off-isolation = 20 log (v out / v in ) v in v cntrl = fn (v audio and v bus ) t v out s v - out v ) figure 23. channel off isolation v out gnd gnd r t gnd gnd v s r s network analyzer r t gnd v cntrl gnd nc crosstalk = 20 log (v out / v in ) v in v cntrl = fn v audio and v bus ) r s and r t are functions of the application environment (see ac tables for specific values) t s gnd gnd gnd figure 24. non-adjacent channel-to-channel crosstalk
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 16 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability test diagrams (continued) capacitance meter f=6mhz v cntrl =fn (v audio and v bus ) dn or r/l or d+/r or d-/l dn or r/l or d+/r or d-/l - figure 25. channel off capacitance capacitance meter f=6mhz v cntrl =fn(v audio and v bus dn or r/l or d+/r or d-/l dn or r/l or d+/r or d-/l ) figure 26. channel on capacitance v out gnd gnd r t gnd gnd v s r s audio analyzer v cntrl gnd r s and r t are functions of the application environment (see ac tables for specific values) v in v cntrl =fn (v audio and vbus ) out s figure 27. total harmonic distortion
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 17 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability tape and reel specification tape format for micropak? dimensions are in millimet ers unless otherwise noted. package designator tape section number cavity cavity status cover tape status leader (start end) 125 (typical) empty sealed carrier 5000 filled sealed l10x trailer (hub end) 75 (typical) empty sealed reel dimensions dimensions are in inches (millimeters) unless otherwise noted. tape size a b c d n w1 w2 w3 7.0 0.059 0. 512 0.795 2.165 0.331 +0.590/- 0.000 0.567 w1 + 0.078/- 0.039 (8mm) (177.8) (1.50) (13.0) ( 20.20) (55.00) (8.40 +1.50/-0.00 (14.40) (w1+ 2.00/-1.00)
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 18 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability tape and reel specification tape dimensions for msop dimensions are in millimeter s unless otherwise specified. reel dimensions for msop dimensions are in inches (millimeters) unless otherwise specified. tape size a b c d n w1 w2 w3 13 0.059 0.512 0.795 7.0 08 0.448 0.724 0.486-0.606 (12mm) (330) (1.5) (13) (20.2) ( 178) (12.4) (18.4) (11.9-15.4)
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 19 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability physical dimensions dimensions are in millimet ers unless otherwise noted. 4 6 1 9 c 1.12 0.55 max pin#1 ident 0.05 c b 0.05 c 10x 0.25 0.25 0.35 10x 0.25 0.15 0.10 c 0.25 0.50 0.75 1.00 1.25 1.50 1.75 (0.20) (0.10) (0.09) a 0.10 c 0.050.00 2x 2x 0.11 0.24 1.51 1.86 0.61 0.86 1.12 1.47 0.25 (10x) 0.35 (10x) 2.10 1.60 0.75 0.50 1.50 c. dimensionsand tolerances conforms to asme y14.5m, 1994. b. dimensionsare in millimeters. mac010arevc notes: land pattern recomend at io n top view bottom view a. package conforms to jedec mo255,variation uabd figure 28. 10-lead micropak?
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 20 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability physical dimensions dimensions are in millimet ers unless otherwise noted. figure 29. 10-lead molded small outline package (msop)
? 2006 fairchild semiconductor corporation www.fairchildsemi.com fsa201 rev. 1.2.1 21 fsa201 ? usb2.0 full-speed and audio swit ches with negative signal capability

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