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| YOUDA INTEGRATED CIRCUIT YD7312 DUAL RECORDING/PLAYBACK PREAMPLIFIER CIRCUIT WITH ALC----YD7312 DESCRIPTION The YD7312 is a monolithic integrated circuit designed for dual pre-amplifier circuit with ALC for recording/playback amplifier of cassette tape recorder. FEATURES *High open loop gain *Incorporates ALC detector circuit *No input coupling condenser *Low noise and current consumption *Wide ALC range *Wide operating voltage range: Vcc=5~12 V *Low power on shock noise BLICK DIAGRAM 14 13 12 11 10 AMP CH1 ALC AMP CH2 1 2 3 4 5 6 7 9 8 RIPPLE FILTER WuXi YouDa Electronics Co., Ltd Tel: Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China 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 3 2006-07-30 YOUDA INTEGRATED CIRCUIT OUTLINE FUNCTION PIN 1 2 3 4 5 6 7 Name GND T.C.ALC INALC1 OUT1 P.COM NF1 IN1 Function GND ALC Time Parameter ALC Input 1 Output 1 Phase Compensation 1 Feedback 1 Input 1 PIN 8 9 10 11 12 13 14 Name IN2 NF2 P.COM OUT2 INALC2 R.F. Vcc YD7312 Function Input 2 Feedback 2 Phase Compensation 2 Output 2 ALC Input 2 Ripple Filter Voltage Supply ABSOLUTE MAXIMUM RATINGS CHARACTERISTIC Supply Voltage Supply Current Power Dissipation Operating Temperature Storage Temperature (Tamb=25) VALUE 14 50 700 -55 to +125 -65 to +150 UNIT V mA mW SYMBOL Vcc Icc PD Topr Tstr ELECTRICAL CHARACTERISTICS (Tamb=25, Vcc=6V, f=1kHz, unless otherwise specified) CHARACTERISTIC Quiescent Current Operating Voltage Closed Loop Voltage Gain Total Harmonic Distortion Output Voltage Output Noise Voltage ALC Voltage ALC Width ALC Balance SYMBOL Iccq Vcc Gv THD Vo VNO VALC WALC Gv Vo=0.5V Vo=0.5V THD=1% Rg=0(internal resistance 1.5k DIN/Audio) Vin=400V Beginning 0dB to 3dB Vo=0.5V 0.55 35 -1 1.2 TEST CONDITION Vin=0 MIN 2.5 5.0 66 69 0.5 1.6 2.0 0.63 47 0 +1 5.0 0.7 TYP 4.5 MAX 8.0 12.0 72 1.0 UNIT mA V dB % V mV V dB dB WuXi YouDa Electronics Co., Ltd 2 of 3 Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT APPLICATION CIRCUIT REC NAB PB RL 0.022 5k 1.8K 39k 82n 10 + 10 100 9 + 1000p 18 YD7312 220 Vcc 10 + + IN 2 14 13 OUT 12 CH1 11 8 YD7312 1 2 1M + 22 4 OUT + CH2 0.022 10 REC RL 39k PB 5k 3 5 6 + 100 82n 1.8k NAB PB REC 18 1000p IN 1 7 OUTLINE DRAWING WuXi YouDa Electronics Co., Ltd 3 of 3 Website: www.e-youda.com |
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