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unisonic technologies co., ltd PA3202 cmos ic www.unisonic.com.tw 1 of 11 copyright ? 2007 unisonic technologies co., ltd qw-r502-106. # 2-w stereo audio power amplifier with mute ? description the utc PA3202 is a monolithic integr ated circuit that stereo bridged audio power amplifiers capable of producing 2 w into 3 ? with a 5v supply voltage or 800mw into 3 ? with a 3.3v supply voltage .the utc PA3202 simplifies design and frees up board space for other features. both of the depop circuitry and the thermal shutdown protection ci rcuitry are integrated in utc PA3202 , that reduce clicks and pops noise during power up or shutdown mode operation. a mux control terminal (hp/line) allows selection between the two sets of stereo input signals. to simplify the audio system design, utc PA3202 combines a stereo bridge-tied loads (btl)mode for speaker drive and a stereo single-end (se)mode for headphone drive into a single chip, where both modes are easily switched by the se/btl input control pin signal. ? features * improves depop circuitry to eliminate turn-on and turn-off transients in output * output power: -2w(typ.)@5v into 3 ? with 0.2% thd+n max (1khz) -800mw(typ.)@3.3v into 3 ? with 0.2% thd+n max (1khz) * fully specified for use with 3- ? loads * stereo switchable bridged/si ngle-ended power amplifiers * input mux select terminal * thermal-shutdown protection * shutdown mode available htssop-24 *pb-free plating product number: PA3202l ? ordering information ordering number normal lead free plating package packing PA3202-n24-r PA3202l-n24-r htssop-24 tape reel PA3202-n24-t PA3202l-n24-t htssop-24 tube http:///
PA3202 cmos ic unisonic technologies co., ltd 2 of 11 www.unisonic.com.tw qw-r502-106. # ? pin configuration 1 gnd/hs 2 t j 3 lout+ 4 llinein 5 lhpin 6 lbypass 7 lv dd 8 shutdown 9 mute out 10 lout- 11 mute in 12 gnd/hs gnd/hs 13 se/btl 14 rout- 15 hp/line 16 nc 17 rv dd 18 rbypass 19 rhpin 20 rlinein 21 rout+ 22 nc 23 gnd/hs 24 ? pin description pin no pin name i/o description 1, 12, 13, 24 gnd/hs power ground; directly connected to thermal pad. 6 lbypass tap to left channel internal mid-supply voltage divider bias 17, 23 nc no connection 19 rbypass tap to right channel internal mid-supply voltage divider bias 4 lline in i left channel line input; selected when hp/line is held low 5 lhp in i left channel headphone input; selected when hp/line is held high 7 lv dd i left channel power supply and for primary bias circuits 8 shutdown i places entire ic in shutdown mode when held high, i dd = 5a 9 mute out i follows mute in, provides buffered output 11 mute in i mute all amplifiers input; high active to mute amplif y, low active to normal operation 14 se/btl i se & btl mode selection; active high for se mode, active low for btl mode 16 hp/line i mux control input, active high to select headphone input, active low to select line input 18 rv dd i right channel power supply 20 rhpin i right channel headphone input, selected when hp/line is held high 21 rlinein i right channel line input, selected when hp/line is held low 2 t j o sources current proportional to the j unction temperature. left floating for normal operation. 3 lout+ o left channel + output in btl & se mode 10 lout- o left channel ? output in btl mode & high-impedance in se mode 22 rout+ o right channel + output in btl & se mode 15 rout- o right channel ? output in btl mode & high impedance in se mode http:///
PA3202 cmos ic unisonic technologies co., ltd 3 of 11 www.unisonic.com.tw qw-r502-106. # ? block diagram http:///
PA3202 cmos ic unisonic technologies co., ltd 4 of 11 www.unisonic.com.tw qw-r502-106. # ? absolute maximum ratings (unless otherwise specified) parameter symbol ratings unit supply voltage v dd 6 v input voltage v in -0.3~v dd ~+0.3 v continuous total power dissipation p d internally limited junction temperature t j +150
operating temperature t opr -40 ~ +85
storage temperature t stg -65 ~ +150
note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? recommended operating conditions parameter symbol min nom max unit supply voltage v dd 3 5 5.5 v v dd = 5 v, 250 mw/ch average power, 4- ? stereo btl drive, with proper pcb design -40 85 operating temperature t opr v dd = 5 v, 2 w/ch average power, 3- ? stereo btl drive, with proper pcb design -40 85
v dd =5v 1.25 4.5 common mode input voltage v icm v dd =3.3v 1.25 2.7 v ? dc electrical characteristics (t a = 25
) parameter symbol test conditions min typ (1) max unit stereo btl 19 30 stereo se 9 18 mono btl 9 18 v dd =5v mono se 3 10 ma stereo btl 13 20 stereo se 5 10 mono btl 5 10 supply current i dd v dd =3.3v mono se 3 6 ma output offset voltage (measured differentially) v o(off) v dd = 5 v, gain = 2, see note 1 5 25 mv supply current in mute mode i dd (mute) v dd =5v 1 ma i dd in shutdown i dd(sd) v dd =5v 5 19 a note 1. at 3 v < v dd < 5 v the dc output volt age is approximately v dd / 2 . http:///
PA3202 cmos ic unisonic technologies co., ltd 5 of 11 www.unisonic.com.tw qw-r502-106. # ? ac operating characteristics v dd = 5 v, t a = 25 , r
l = 3 ? parameter symbol test conditions min typ max unit thd =0.2% btl 2 output power (each channel) see note 2 p out thd =1% btl 2.2 w p out = 2 w, f = 20 ~20 khz 200 m% total harmonic distortion plus noise tdh+n v in = 1v, r l =10k ? , a v =1v/v 100 m% maximum output po wer bandwidth b w a v = 10 v/v ,thd < 1 %, >20 khz phase margin r l = 4 ? , open loop, 85 f = 1 khz 80 supply ripple rejection ratio rr f = 20~20khz, 60 db mute attenuation 85 db channel-to-channel output separation f = 1 khz 85 db line/hp input separation 100 db btl attenuation in se mode 100 db input impedance z in 2 m ? signal-to-noise ratio p out =500mw, btl 95 db output noise voltage en 21 v (rms) v dd = 3.3 v, t a = 25 , r
l = 3 ? parameter symbol test conditions min typ max unit thd =0.2% btl 800 output power ( each channel) see note 2 p out thd =1% btl 900 mw p out = 800mw, f = 20 ~20 khz 350 m% total harmonic distortion plus noise tdh+n v in = 1v, r l =10k ? , a v =1v/v 200 m% maximum output po wer bandwidth b w a v = 10 v/v, thd < 1 %, >20 khz phase margin r l = 4 ? , open loop 85 f = 1 khz 70 supply ripple rejection ratio rr f = 20~20khz, 55 db mute attenuation 85 db channel-to-channel output separation f = 1 khz 85 db line/hp input separation 100 db btl attenuation in se mode 100 db input impedance z in 2 m ? signal-to-noise ratio p out =500mw, btl 95 db output noise voltage en 21 v (rms) note 2. output power is measured at the output terminals of the ic at 1 khz. http:///
PA3202 cmos ic unisonic technologies co., ltd 6 of 11 www.unisonic.com.tw qw-r502-106. # ? typical application circuit rlinein rhpin rbypass mute in mute out shutdown lbypass lhpin llinein lout- lout+ lv dd hp/ line se/btl rv dd rout- rout+ c ir 1 r ir 10k c b 1 ? f system control nc r il 10k c il 1 r fl 50k c fl 5pf c outl 330 1k 1k ? c outr 330 v dd 100k c s 0.1 ( see note ) 100k v dd 0.1 0. 1 f ceramic capacitor should be placed as close as possible to the ic. for filtering lower - frequency noise signals, a larger aluminum electrolytic capacitor of 10 f or greater should be placed near the audio power amplifier . bias, thermal shutdown PA3202 minimum configuration application circuit nc c fr 5pf r fr 50k logic control right mux left mux ? f ? f ? f ? f ? ? ? ? ? ? f ? f ? ? note : http:///
PA3202 cmos ic unisonic technologies co., ltd 7 of 11 www.unisonic.com.tw qw-r502-106. # ? typical application circuit PA3202 full configurati on application circuit logic control rlinein rhpin rbypass mute in mute out shutdown lbypass lhpin llinein lout- lout+ lv dd hp/line se/btl rv dd rout- rout+ c irline 1 f r frline 50k $ c frline 5pf c irhp 1 f r ir line 10k $ r irhp 10k $ c br 0.1 f system control see note 1 c bl 1 f c ilhp 1 f r illine 10k $ c illine 1 f r flline 50k $ c flline 5pf c outl 330 f 1k $ 1k $ c outr 330 f v dd 100k $ c sr 0.1 f (see note 2) 100k $ v dd 0.1 f c sr 0.1 f (see note 2) note:1. this connection is for ultra-low current in shutdown mode. 2. a 0.1 f ceramic capacitor s hould be placed as close as possibl e to the ic. for filtering lower- frequency noise signals, a larger aluminum electrol ytic capacitor of 10 f or greater should be placed near the audio power amplifier. r flhp 10k $ bias, thermal shutdown r frhp 10k $ r ilhp 10k $ right mux left mux http:///
PA3202 cmos ic unisonic technologies co., ltd 8 of 11 www.unisonic.com.tw qw-r502-106. # ? typical characteristics thd+n ? total harmonic distortion + noise (%) thd+n ? total harmonic distortion + noise (%) thd+n ? total harmonic distortion + noise (%) thd+n ? total harmonic distortion + noise (%) 0.01 0.1 1 10 20 100 1k 10k 20k total harmonic distortion plus noise vs frequency frequency, f (hz) p out =20mw v dd =5v r l =32 $ se p out =75mw p out =25mw 0.01 0.1 1 10 0.001 0.01 0.1 1 total harmonic distortion plus noise vs output power output power, p out (w) f=20hz f=20khz v dd =5v r l =32 $ se f=1khz http:///
PA3202 cmos ic unisonic technologies co., ltd 9 of 11 www.unisonic.com.tw qw-r502-106. # ? typical characteristics(cont.) output noise voltage, v n ( v) (rms) supply ripple rejection ratio (db) supply ripple rejection ratio (db) crosstalk (db) crosstalk (db) gain (db) phase http:///
PA3202 cmos ic unisonic technologies co., ltd 10 of 11 www.unisonic.com.tw qw-r502-106. # ? typical characteristics(cont.) output power, p out (w) output power, p out (w) output power, p d (w) power dissipation, p d (w) 0 0.2 0.6 0.8 00.3 power dissipation, p d (w) 0.4 output power, p out (w) 0.6 0.4 0.1 r l =8 $ power dissipation vs output power r l =4 $ r l =32 $ v dd =5v se each channel 0.2 0.5 0 0.2 0.6 0 power dissipation, p d (w) 0.4 output power, p out (w) 0.25 0.15 0.05 power dissipation vs output power r l =32 $ v dd =3.3v se each channel 0.1 0.2 r l =8 $ r l =4 $ http:///
PA3202 cmos ic unisonic technologies co., ltd 11 of 11 www.unisonic.com.tw qw-r502-106. # utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. http:///

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