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| YOUDA INTEGRATED CIRCUIT YD8227 LOW FREQUENCY POWER AMPLIFIER--YD8227 DESCRIPTION The YD8227P is the audio power amplifier with built-in two channels developed for portable radio cassette tape recorder with power ON/OFF switch. FUNCTIONS *Wide operating supply voltage: Vcc=512V; *Low quiescent supply current (ICC=21mA, typical,at Vcc=9V, Vi=0); *Output power: Po=2.50W/CH at Vcc=9V, RL=4, f=1kHz, THD=10%; *Soft clip; *Built-in Thermal shut-down protection circuit; *Stand-by switch. BLOCK DIAGRAM 12 Vcc1 + + Vstb 1 2 3 TAB Pre-GND 4 11 10 TAB 9 8 7 5 6 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 2006-06-28 YOUDA INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS(Tamb=25) PARAMETER Supply Voltage Output Peak Current Power Dissipation (80*60*1.2mm3 PCB) Operating Temperature Storage Temperature SYMBOL VCC Iop PD Topr Tstg VALUE 20 2.5 4.0 -25 to +75 -55 to +150 YD8227 UNIT V A W ELECTRICAL CHARATERISTICS (VCC=9V, Rg=600, f=1kHz, Tamb=25, all voltage referenced to GND unless otherwise specified) PARAMETER Quiescent Current Output Power Total Harmonic Distortion Voltage Gain Input Resistance Output Noise Voltage Ripple Rejection Ratio Cross Talk Input Offset Voltage Standby Current SYMBOL Iccq Po TEST CONDITIONS Vin=0 THD=10%, RL=4 THD=10%, RL=3 THD Po=0.4W/CH Rf=120 VO=0.775V Rf=0 VO=0.775V Zi VN0 RR CT V7-8 ISBY f=1kHz Rg=10k BPF=20Hz20KHz f=100Hz Rg=600 43 2.0 MIN TYP 21 2.5 3.0 0.2 45 56.5 30 0.3 52 50 30 1 60 1.0 k mV dB dB mV A 1.0 47 % MAX 45 UNIT mA W Gv dB Vo=0.775V WuXi YouDa Electronics Co., Ltd 2 of 4 Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT APPLICATION CIRCUIT YD8227 Vcc + 100 Stand-by SW 1 12 3 + 0.01 470 Vin1 + 4.7 120 6 5 + 2 - + 100 + 470 0.1 4.7 SPEAKER + 100 + 47 Vin2 9 10 7 8 + 11 + 100 + 470 0.1 SPEAKER 4.7 + 4.7 120 + 100 4 TAB WuXi YouDa Electronics Co., Ltd 3 of 4 Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT OUTLINE DRAWING YD8227 WuXi YouDa Electronics Co., Ltd 4 of 4 Website: www.e-youda.com |
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