unisonic technologies co., ltd AN17823 preliminary linear integrated circuit www.unisonic.com.tw 1 of 4 copyright ? 2011 unisonic technologies co., ltd qw-r107-063.a btl 4.0w x 1ch power amplifier ? description the utc AN17823 is btl 4.0w x 1ch power amplifier with standby function and volume function. ? features * 3-w output (8 ? ) with supply voltage of 8v * 4-w output (8 ? ) with supply voltage of 9v * on-chip standby function * on-chip volume function ? ordering information ordering number lead free halogen free package packing AN17823l-h09-b-t AN17823g-h09-b-t hsip-9b tube
AN17823 preliminary linear integrated circuit unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r107-063.a ? block diagram and pin configuration - + - + low gain + - ch output (-) standby ch input n.c volume v cc 1 2 3 4 5 6 7 8 9 ch output (+) gnd (output) gnd (input) ? pin description pin no. pin name description 1 v cc supply voltage 2 ch output (+) output+ 3 gnd (output) power ground 4 ch output (-) output- 5 standby standby 6 ch input signal input 7 gnd (input) signal ground 8 n.c no connect (do not apply voltage or current from outside.) 9 volume volume
AN17823 preliminary linear integrated circuit unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r107-063.a ? absolute maximum rating (t a = 25c, unless otherwise specified.) parameter symbol ratings unit supply voltage (dc) v cc 14.4 v output current iout 1.0 a power dissipation (t a = 70c) p d 1.22 w storage temperature (note ) t stg -55 ~ +150 c operating temperature (note ) t opr -25 ~ +70 c notes: 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 ratings parameter symbol ratings unit supply voltage v cc 3.5 ~ 13.5 v ? electrical characteristics (t a = 25c, v cc =8.0v, frequency=1khz and r l =8 ? , unless otherwise specified.) parameter symbol test conditions min typ max unit quiescent circuit current i cq v in =0v, vol=0v 20 60 ma standby current i stb v in =0v, vol=0v 1 10 a output offset voltage v off r g =10k ? , vol=0v -250 0 250 mv total harmonic distortion thd p o =0.5w, vol=1.25v 0.10 0.5 % maximum power output 1 p o 1 thd=10%, vol=1.25v 2.4 3.0 w maximum power output 2 p o 2 v cc =9v, thd=10%, vol=1.25v 3.2 4.0 w ripple rejection ratio (note ) rr r g =10k ? , vol=0v v r =0.5vrms, fr=120hz 30 50 db output noise voltage (note ) v no r g =10k ? , vol=0v 0.10 0.4 mvrms volume attenuation ra tio (note ) att p o =0.5w, vol=0v 70 85 db voltage gain g v p o =0.5w, vol=1.25v 31 33 35 db middle voltage gain g vm p o =0.5w, vol=0.6v 20.5 23.5 26.5 db standby pin current i stb2 v in =0v, v stb =3v 25 a volume pin current i vol v in =0v, v o l=0v -12 a input impedance zi v in =0.3v dc 24 30 36 k ? note: in measuring, the filter for the r ange of 15 hz ~ 30 khz (12 db/oct) is used.
AN17823 preliminary linear integrated circuit unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r107-063.a ? typical application circuit 9 8 7 6 5 4 3 2 1 1.25v 0v volume 10k v in 270k 68k 5v 0v stand-by v cc out1 8 ? 470 + 10 + + 1.0 utc AN17823 ? application information 1. make sure that the ic is free of any pin shor t-circuiting, ground short, and load short-circuiting. 2. ground the radiation fin so that there will be no differe nce in electric potential between the radiation fin and ground. 3. the thermal protection circuit operat es at a tj of approximately 150c. t he thermal protection circuit is reset automatically when the temperature drops. 4. make sure that the heat radiation design is effective enough if the vcc is comparatively high or the ic operates high output power. 5. connect only ground pin for signal sources to the si gnal gnd pin of the amplifie r on the previous stage. 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.
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