july 2013 ? 20 12 f airchild semiconductor corporation www.fairchildsemi.com fsa80 5 8 ? rev. 1.0.0 FSA8058 audio jack detection and configuration switch with moisture sensing fsa80 5 8 audio jack detection and configuration switch with moisture sensing features detection accessory plug - in 3 - pole or 4 - pole audio jack send/end key pressed moisture switch type mic v dd 2. 5 v to 4.5 v v io 1.6 to v dd thd (mic) 0.01% typical esd (air gap) 15 kv operating temperature - 40c to 85c package 10 - lead umlp , 1.4 mm 1.8 mm 0.5 mm, 0.4 mm pitch top mark fsa80 5 8 n c ordering information fsa80 5 8umx applications ? 3.5 mm and 2.5 mm audio jacks ? cellular phones, smart p hones ? mp3 and pmp description the FSA8058 is an audio jack detection switch for 3 - pole and 4 - pole accessories. the FSA8058 features moisture sensing, which prevents false positive detection of accessories in the audio jack. the fsa80 5 8 also features an integrated mic switch that allows a processor to configure attached accessories. th e architecture is designed to allow common third - party headphones to be used for listening to music from mobile handsets, personal media players, and portable peripheral devices. ? prevents false detection of accessories in the audio jack when moisture is pr esent ? removes audio jack pop and click caused by mic bias ? detects audio jack accessories: - standard headphones - send / end button presses ? integrates a mic switch for 4 - pole configuration related resources ? fsa80 5 8 evaluation board ? for samples and questions, please contact: analog.switch@fairchildsemi.com figure 1. system diagram l o g i c b a s e b a n d c o d e c a u d i o j a c k g p i o i n t e r f a c e m i c m i c - s e n d / e n d k e y j a c k d e t e c t f s a 8 0 5 8 i n s e r t a n d m o i s t u r e d e t e c t i o n k e y d e t e c t i o n
? 20 12 f airchild semiconductor corporation www.fairchildsemi.com fsa80 5 8 ? rev. 1.0.0 2 FSA8058 audio jack detection and configuration switch with moisture sensing pin configuration figure 2. pin assignment (through view) pin definitions name pin # type description det 2 output indicates if audio jack is plugged in as detected on j_det pin det = low , plugged det = high , unplugged jpole 4 output indicates if audio jack is a 3 - pole jack or a 4 - pole jack jpo l e = low , 4 - pole jack jpo l e = high , 3 - pole jack s/e 6 output indicates state of send/end for a 4 - pole accessory when a key has been pressed s/e = low , no key press s/e = high , key press en 3 input controls internal microphone switch between the j_mic and mic pins en = low, switch open en = high, switch closed j_det 10 input input from a pin of the audio jack socket tied to a mechanical switch that typically closes whenever an audio jack is inserted into that socket j_det = high , unplugged j_det = low , plugged mic 7 switch microphone switch path that goes to the codec microphone amplifier input en = low , switch open en = high , switch closed j_mic 8 switch microphone s witch path that connects to the microphone and send/end key audio jack pole en = low , switch open en = high , switch closed vdd 5 power core s upply v oltage vio 1 power baseband i/o s upply v oltage gnd 9 ground ground for both the audio jack and the pcb 2 1 1 0 9 8 6 7 3 4 5 v i o d e t j _ d e t j _ p o l e v d d e n s / e m i c j _ m i c g n d 1
? 20 12 f airchild semiconductor corporation www.fairchildsemi.com fsa80 5 8 ? rev. 1.0.0 3 FSA8058 audio jack detection and configuration switch with moisture sensing operation and application description moisture issue mobile device manufacture rs today face a customer experience issue when liquid /moisture enters the audio jack connector housing and caus e s electrical shorts between metal connector s. the mobile device recognizes it as an accessory insert , r esulting in the mobile device rerout ing all the audio signals though the audio jack path , where the end user lose s all audio function on the device. moisture det ection the FSA8058 automatically detect s m oisture on the j_det pin. if there is m oisture , the device enter s m oisture m ode and monitor s for a real accessory insert. i t remain s in m oisture m ode until the device no longer detects moisture on the j_det pin. figure 3. typical application diagram 1 2 3 4 b a s e b a n d p r o c e s s o r g p i o 1 g p i o 2 g p i o 3 g p i o 4 a u d i o c o d e c m i c b i a s m i c l s p k r r s p k r a u d i o j a c k 1 2 3 4 o s c i l l a t o r l o g i c j a c k d e t e c t i o n ( m o i s t u r e ) v d d 2 . 5 t o 4 . 5 v j _ m i c m i c g n d d e t e n j p o l e s / e v i o 1 . 6 t o v d d j _ d e t f s a 8 0 5 8 m i c d e t e c t i o n k e y p r e s s d e t e c t i o n
? 20 12 f airchild semiconductor corporation www.fairchildsemi.com fsa80 5 8 ? rev. 1.0.0 4 FSA8058 audio jack detection and configuration switch with moisture sensing 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 stressing the parts to these levels is not recommended. in addition, e xtended exposure to stresses above the recommended operating conditions may affect device reliability. the absolute maximum ratings are stress ratings only. symbol parameter min. max. unit v dd , v io supply voltage from battery - 0.5 6.0 v v sw switch i/o voltage for s switch - 0.5 v dd +0.5 v v jd input voltage for j_det input - 1.5 v dd +0.5 v i ik input clamp diode current - 50 ma i sw switch i/o current (continuous) 50 ma t stg storage temperature range - 65 +150 ? j maximum junction temperature +150 ? l lead temperature (soldering, 10 seconds) +260 ? dd , v io 12.0 jedec jesd22 - c101, charged device model all pins 2.0 recommended operating conditions the recommended operating conditions table defines the conditions for actual device operation. recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. fairchild does not recommend exceeding them or designing to absolute maximum ratings. symbol parameter min. max. unit v dd battery supply voltage 2. 5 4.5 v v io parallel i/o supply voltage 1.6 v dd v t a operating temperature - 40 +85 oc
? 20 12 f airchild semiconductor corporation www.fairchildsemi.com fsa80 5 8 ? rev. 1.0.0 5 FSA8058 audio jack detection and configuration switch with moisture sensing dc electrical characteristics all typical values are at t a =25c unless otherwise specified. symbol parameter v dd (v) condition t a = - 40 to +85c unit min. typ. max. mic switch r on mic switch on resistance 2.8 i out = 30 ma, v in = 2.2 v 0.85 2.0 0 ? 0.70 2.0 0 3.3 0.50 2.0 0 3.8 0.40 2.0 0 r flat(on) on resistance flatness 2.8 i out = 30 ma, v in = 1.6 to 2.8 v 0.45 1.5 0 3.0 0.40 1.5 0 3.3 0.35 1.5 0 3.8 0.30 1.5 0 v in switch input voltage range 2.5 to 4.5 0 v dd v c on mic and j_mic switch on capacitance 3.8 f = 1 mhz 60 pf c off mic and j_mic switch off capacitance 3.8 f = 1 mhz 35 pf j_mic j_mic audiov audio voltage range on j_mic pin 2.5 to 4.5 det = low 0 3 v j_mic audiof audio frequency on j_mic pin 2.5 to 4.5 det = low 20 20000 hz j_mic rgnd2 detection resistance to ground 1250 ? hys hysteresis of j_mic 60 mv j_mic vih input high voltage 0.3 v j_mic vil input low voltage - 0.5 1 .0 v j_det j_det audiov audio voltage range on j_det pin 2.5 to 4.5 det = low - 1 1 v j_det audiof audio frequency on j_det pin 2.5 to 4.5 det = low 20 20000 hz j_det rgnd detection resistance to ground 2.5 to 4.5 audio jack inserted 0 500 k? hys hysteresis of j_det 200 mv j_det vih input high voltage 0.7 v dd v dd v j_det vil input low voltage - 1 .0 0.4 v dd v parallel i/o v ih input high voltage 0.7 v io v io v v il input low voltage 0.3 v io v oh output high voltage i oh = - 100 a 0.8 v io v ol output low voltage i ol = +100 a 0.2 v io continued on the following page
? 20 12 f airchild semiconductor corporation www.fairchildsemi.com fsa80 5 8 ? rev. 1.0.0 6 FSA8058 audio jack detection and configuration switch with moisture sensing dc electrical characteristics all typical values are at t a =25c unless otherwise specified. symbol parameter v dd (v) condition t a = - 40 to +85c unit min. typ. max. comparator v comp_s/e comparator threshold for send / end sensing 2.8 to 4.5 j_det, en = low 780 mv current i off power - off leakage current through switch 0 mic, j_mic , ports v in = 4.3 v 1 a i in input leakage current 0 inputs v in = 4.3 v 1 a i cc - slna battery supply sleep mode current no accessory attached 2.5 to 4.5 static current during sleep mode (en = low) 1.5 3.0 a i cc - slwa battery supply sleep mode current with accessory attached 2.5 to 4.4 active current (en = low and/or det = high) 20 25 a ac electrical characteristics all typical values are for v cc =3.3 v at t a =25c unless otherwise specified. symbol parameter v dd (v) conditions typ ical unit mic switch thd total harmonic distortion 3.8 r t = 600 ?, v sw = 0.5 v pp , f = 20 hz to 20 khz , v in = 2.2 v 0.01 % o irr off isolation 3.8 f = 20 khz, r s = 32 ?, l = 0 pf, r t = 32 ? parallel i/o t r , t f output edge rates (det, s/e) 3.8 c l = 5 pf, 20% to 80% , - 40c to 85c 20 ns t poll on time of mic s witch for sensing send / end b utton p ress oscillator s table t ime 2. 5 to 4. 5 1 ms t wait period of mic s witching t ime for s ensing sen d / end b utton p ress 2. 5 to 4. 5 10 ms t det _ in debounce time after j_det changes state from high to low 2. 5 to 4. 5 100 ms t det_rem debounce time after j_det changes state from low to high 2. 5 to 4. 5 1 m s t kbk debounce t ime for s ensing send / end k ey p ress / r elease 2. 5 to 4. 5 30 ms power psrr power supply rejection ratio 3.8 power supply noise 300 mv pp , measured 10/90%, f = 217 hz - 8 0 db
? 20 12 f airchild semiconductor corporation www.fairchildsemi.com fsa80 5 8 ? rev. 1.0.0 7 FSA8058 audio jack detection and configuration switch with moisture sensing physical dimensions figure 4. 10 - lead, quad ultrathin mlp (umlp), 1.4 x 1.8 mm body table 1. nominal values jedec symbol description nominal values (mm) a overall height 0.5 a1 package standoff 0.072 a3 lead thickness 0.152 b lead width 0.4 l lead length 0.2 e lead pitch 0.4 d body length (y) 1.8 e body width (x) 1.4 package drawings are provided as a service to customers considering fairchild components. drawings may change in any manner without notice. please note the revision and /or date on the drawing and contact a fairchild semiconductor representative to verify or obtain the most recent revision. package specifications do not expand the terms of fairchilds worldwide terms and conditions, specifically the warranty therein, which covers fairchild products. always visit fairchild semiconductors online packaging area for the most recent package drawings: http://www.fairchildsemi.com/dwg/um/umlp10a.pdf . a b c seating plane detail a pin#1 ident recommended land pattern notes: a. package does not conform to any jedec standard. b. dimensions are in millimeters. c. dimensions and tolerances per asme y14.5m, 1994. d. land pattern recommendation is based on fsc design only. e. drawing filename: mkt-umlp10arev5. f. fairchild semiconductor. top view bottom view 0.10 c 0.08 c 0.10 c 2x 2x side view 0.10 c 0.05 0.00 3 6 1 0.10 c a b 0.05 c 0.55 max. 10 1.40 1.80 0.40 0.15 0.25 (10x) 0.35 0.45 (9x) 1.70 2.10 0.40 0.663 0.563 (9x) 0.225 (10x) 1 (0.15) 0.55 0.45 detail a scale : 2x 1.85 1.45 0.55 0.40 0.225 (10x) 9x 0.45 pin#1 ident optional minimial toe land pattern scale : 2x lead option 1 scale : 2x lead option 2 package edge 45 0.25 0.15
? 20 12 f airchild semiconductor corporation www.fairchildsemi.com fsa80 5 8 ? rev. 1.0.0 8 FSA8058 audio jack detection and configuration switch with moisture sensing
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