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| YOUDA INTEGRATED CIRCUIT YD2025A 2.4W STEREO AUDIO POWER AMP----YD2025A DESCRIPTION The YD2025A is a monolithic integrated circuit consisting of a 2-channel power amplifier. It is suitable for stereo and bridge amplifier application of radio cassette tape recorder. FEATURES *High output power Stereo: Po=2.4W(Typ) at Vcc=9V,RL=4,THD=10% Bridge: Po=4.7W(Typ) at Vcc=9V,RL=8,THD=10% *Small shock noise at the time of power on/off due to a built-in muting circuit *Good ripple rejection due to a built-in ripple filter *Good channel separation *Soft tone at the time of output saturation *Closed loop voltage gain fixed 45dB (Bridge: 51dB) but availability with external resistor added *Minimum number of external parts required BLOCK DIAGRAM 16 Vcc + 15 14 13 GND 12 11 10 9 Pre-GND 5k 50 + GND 1 2 3 4 5 6 7 WuXi YouDa Electronics Co., Ltd Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China Tel: 86-510-85205117 86-510-85205106 Fax: 86-510-85205110 Website: www.e-youda.com SHENZHEN OFFICE Tel 86-755-83740369 Fax 86-755-83741418 Ver 5.0 1 of 4 2006-06-18 RIPPLE FILTER 8 YOUDAINTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Vi=0 Vi>0 Output Peak Current Power Dissipation 80*60*1.2mm3 PCB No Heat Sink Iop PD 1 PD2 Topr Tstg (Tamb=25) SYMBOL VCC YD2025A VALUE 20 15 2.0 3.5 1.6 -20+75 -55+150 UNIT V A W W Operating Temperature Storage Temperature ELECTRICAL CHARACTERISTICS (Tamb=25, Vcc=9V, f=1kHz, Rg=600, Unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Operating Supply Voltage Quiescent Circuit Current Output Power Total Harmonic Distortion Closed Loop Voltage Gain Input Resistance Output Noise Voltage Ripple Rejection Ratio Cross-Talk Vcc ICCQ PO Vi>0 Vi=0 THD=10%, RL=4 THD=10%, RL=3 6 9 26 15 40 V mA W/CH 2.0 2.4 3.0 0.2 1.0 47 dB 53 k 1.0 mV dB dB % THD Gv PO=0.4W/CH Stereo Bridge 43 49 45 51 30 0.3 46 Zi VNO RR CT f=1kHz Rg=10k, BPF=22Hz22kHz F=100Hz, Rg=600 VO=0dBm 46 55 WuXi YouDa Electronics Co., Ltd 2 of 4 Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT APPLICATION CIRCUIT 1YD2025A TYPE APPLICATION + 100 + 8 16 14 YD2025A Vcc 470 0.1 + 100 + 470 0.15 3 IN 1 + 10 + 15 2.2 11 100 IN 2 + + _ RL + 7 + 2 100 + 470 RL 2.2 6 100 + 4 5 9 12 13 _ 1 0.15 (2) YD2025A BTL APPLICATION Vcc + 100 IN 8 16 14 10 + 470 + 100 15 + 2.2 + 100 + _ 11 0.15 3 7 + + 2 100 RL + 100 6 1 4 _ 0.15 5 9 12 13 WuXi YouDa Electronics Co., Ltd 3 of 4 Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT OUTLINE DRAWING YD2025A WuXi YouDa Electronics Co., Ltd 4 of 4 Website: www.e-youda.com |
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