youda integrated circuit YD386 low voltage audio power amplifier ?a?a YD386 description the YD386 is a power amplifier, designed for use in low voltage consumer applications. the gain is internally set to 20 to keep the external part count low. but the ad ditional of an external resistor and capacitor between pin 1 and pin 8 will increase the gain to any value up to 200. features *minimum external parts; *wide supply voltage range: 4v~12v; *voltage gains:20~200; *ground referenced input; *low distortion . block diagram _ + 6 8 1 5 4 23 7 gnd vcc wuxi youda electronics co., ltd add: no.5 xijin road, national hi-tech industrial development zone, wuxi jiangsu china tel: 86-510-5205117 86-510-5205108 fax: 86-510-5205110 website: www.e-youda.com shenzhen office tel o 86-755-83740369 13823533350 fax o 86-755-83741418 ver 3.1 1 of 3 2004-9-20 s
youda integrated circuit YD386 absolute maximum ratings (tamb=25 ??) parameter symbol value unit supply voltage vcc 15 v power dissipation p d 1250 mw input voltage vi 0.4v v operating temperature topr 0 to +70 ?? storage temperature tstg -65 to +150 ?? electrical characteristic (tamb=25 ?? ,all voltage referenced to gnd unless otherwise specified) parameter symbol test conditions nin typ max unit supply voltage vcc 4 12 v quiescent circuit current iccq vi=0 4 8 ma output power vcc=6v, thd=10% 250 325 po vcc=9v, thd=10% 500 700 mw voltage gain pin1 and pin 8 open 26 gv 10| f fron pin1 and pin8 46 db gain bandwidth pin1 and pin 8 open 300 bw 10| f fron pin1 and pin8 60 khz total harmonic distortion thd po=125mw, pin1 and pin 8 open 0.2 % supply voltage rejection rr 10| f fron pin7 and gnd 50 db input resistance zi 50 k ? input bias current i b pin2 and pin 3 open 250 na s
youda integrated circuit YD386 application circuit - + 6 8 1 5 4 2 3 7 + 10| 0.1| + 470| w 10k 0.047| 10|? + 220| + 10| vin rl vcc outline drawing s
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