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| YOUDA INTEGRATED CIRCUIT YD820 1.2W AUDIO POWER AMPLIFIER--YD820 DESCRIPTION The YD820 is a monolithic integrated circuit audio amplifier. It is designed audio frequency class B amplifiers. FEATURES *Wide operating supply voltage: Vcc=3~12V. *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 8 7 6 Vcc 5 _ 1 2 + 3 GND 4 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Output Peak Current Power Dissipation Operating Temperature Storage Temperature (Tamb=25) SYMBOL Vcc Iop PD Topr Tstg VALUE 16 1.5 1.25 -20~ +70 -55~ +150 UNIT V A W WuXi YouDa Electronics Co., Ltd Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China Tel: 86-510-5205117 86-510-5205106 Fax: 86-510-5205110 Website: www.e-youda.com SHENZHEN OFFICE Tel 86-755-83740369 Fax 86-755-83741418 Ver 5.0 1 of 4 2006-06-28 YOUDA INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VCC=9V, RL=8, Rg=600, f=1kHz, Tamb=25 PARAMETER Supply Voltage Output DC Voltage Quiescent Circuit Current SYMBOL Vcc VoDC Iccq Vcc =12V, RL=8 THD =10% Rf =120 Vcc =9V, RL=4 Vcc =9V, RL=8 Vcc =6V, RL=4 Vcc =3.5V, RL=4 Vcc =3V, Po=1.2W 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 Rf =33 Rf =120 BPF=20Hz20kHz 20Hz20kHz Po=1.2W, Gv =34 dB, BPF=20Hz20kHz fr=100kHz, C6=47F, Rf=120 RL=4 Rf=33 Rf =120 Rf =33 Rf =120 f=1kHz C8=680pF C8=220pF Po=500mW, Rf =33 Po=500mW, Rf =120 0.9 TEST CONDITIONS MIN 3 4 4.5 4 2 1.6 1.2 0.75 0.25 0.20 16 60 3.5 12 5 TYP YD820 MAX 12 5 12 UNIT V V mA Output Power Po W mV M HZ % dB dB V nA dB dB 507000 5020000 0.8 0.4 75 45 34 3 0.4 80 42 WuXi YouDa Electronics Co., Ltd 2 of 4 Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT APPLICATION CIRCUIT 1 Vcc YD820 + 470 56 + 6 7 100 C8 1 0.1 Vin 3 2 10k Rf + 5 _ + 1 470 SPEAKER 4 + 100 8 + 47 0.22 APPLICATION CIRCUIT 2 Vcc + 0.1 470 C8 6 7 1 SPEAKER Vin 3 5 2 10k Rf 4 + 100 8 + 47 + 470 1 0.22 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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