YD820

m o YOUDA INTEGRATED YD820 .c CIRCUIT U 4 t e e h AUDIO POWER AMPLIFIER—YD820 1.2W S a t a D DESCRIPTION . w w The YD820 is a monolithic integrated circuit audio amplifier. It is designed audio frequency class B amplifiers. w FEATURES *Wide operating supply voltage: Vcc=3~14V. *Low quiescent supply current (Icc=4mA, typical). *Medium output power Po=1.2W at Vcc=9V, RL=8ohm, THD=10%. *Good ripple rejection *Minimum number of external parts required. BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage m o Storage Temperature Tstg -55~ +150 ¡æ .c U 4 t e e WuXi YouDa Electronics Co., Ltd h S Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi a Jiangsu China Tel: 86-510-5205117 86-510-5205108 Fax: 86-510-5205110 Website: at www.e-youda.com SHENZHEN OFFICE Tel£º 86-755-83740369 13823533350 Fax£ º 86-755-83741418 .D w Ver 3.1 1 of 4 2004-9-20 w w Operating Temperature Topr -20~ +70 ¡æ Power Dissipation (Tamb=25¡æ m o .c U 4 t e e h S a t a .D w w w 8 7 6 Vcc 5 _ + 1 2 3 GND 4 (Tamb=25¡æ ) SYMBOL Vcc Iop PD VALUE 16 1.5 UNIT V A Output Peak Current ) 1.25 W YOUDA INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VCC=9V, RL=8¦¸ PARAMETER Supply Voltage Output DC Voltage Quiescent Circuit Current Input Bias Current SYMBOL Vcc Vo£¨ DC£© YD820 , Rg=600¦¸ , f=1kHz, Tamb=25¡æ£© MIN 3 4 4.5 4 0.1 ¦Ì Vcc =12V, RL=8¦¸ 2 1.6 0.9 1.2 0.75 0.25 0.20 16 60 3.5 12 5 25¡« 25¡« 7000 20000 0.8 0.4 75 Rf =33¦¸ Rf =120¦¸ 45 34...