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| om YOUDA INTEGRATED CIRCUIT YD820 .c U t4 ee 1.2W Sh AUDIO POWER AMPLIFIER--YD820 ta 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 om Storage Temperature Tstg -55~ +150 ae .c 4U et WuXi YouDa Electronics Co., Ltd he 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: www.e-youda.com at SHENZHEN OFFICE Tel 86-755-83740369 13823533350 FaxD 86-755-83741418 . w Ver 3.1 1 of 4 2004-9-20 w w Operating Temperature Topr -20~ +70 ae Power Dissipation (Tamb=25ae m o .c U t4 e e h S ta a .D w w w 8 7 6 Vcc 5 _ + 1 2 3 GND 4 (Tamb=25ae ) 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(c) YD820 , Rg=600| , f=1kHz, Tamb=25ae(c) MIN 3 4 4.5 4 0.1 |I 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 20kHz Rg=10k Rg=50k 3 |I 0.4 80 70 42 M| HZ % dB dB V nA dB dB mV W TYP MAX 16 5 12 UNIT V V mA A TEST CONDITIONS Iccq IB THD =10% Rf =120| Vcc =9V, RL=4| Vcc =9V, RL=8| Vcc =6V, RL=4| Vcc =3.5V, RL=4| Vcc =3V, RL=4| Po=1.2W Rf=33| Rf =120| Rf =33| Rf =120| f=1kHz C5=1000|I C5=1000|I F, C8=680pF F, C8=220pF Output Power Po Input Sensitivity Vin Po=50mW Input Resistance Gain Bandwidth Total Harmonic Distortion Open Loop Voltage Gain Closed Loop Voltage Gain Input Noise Voltage Input Noise Current Signal Noise Ratio Ripple Rejection Ratio Zi BW THD Gvo Gv VNI INI S/N RR Po=50mW, Rf =33| Po=50mW, Rf =120| BPF=20Hz 20Hz 20kHz Po=1.2W, Gv =34 dB, BPF=20Hz 20kHz fr=100kHz, C6=47|I F, Rf=120| WuXi YouDa Electronics Co., Ltd 2 of 4 Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT APPLICATION CIRCUIT 1 Vcc YD820 + 470|I 56| + 100|I C8 6 7 1 0.1|I Vin 3 2 10k Rf + 5 _ 1| 4 8 + 47|I + 470|I SPEAKER + 100|I 0.22|I APPLICATION CIRCUIT 2 Vcc + 0.1|I 470|I C8 6 7 1 SPEAKER Vin 3 5 2 1| 10k Rf 4 + 100|I 8 + 47|I + 470|I 0.22|I WuXi YouDa Electronics Co., Ltd 3 of 4 Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT OUTLINE DRAWING YD820 WuXi YouDa Electronics Co., Ltd 4 of 4 Website: www.e-youda.com |
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