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| UTC386 LI NEAR I NTEGRATED CI RCUI T LOW VOLTAGE AUDIO POWER AMPLIFIER DESCRIPTION The UTC386 is a power amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 keep the external part count low, but the additional of external resistor and capacitor between pin 1 and pin 8 will increase the gain to any value up to 200. FEATURES *Battery operation *Minimum external parts *Wide supply voltage range:4V~12V *Low quiescent current drain(4mA) *Voltage gains:20~200 *Ground referenced input *Self -centering output quiescent voltage *low distortion DIP-8 BLOCK DIAGRAM 6 VCC 7 Bypass 15k 15k 8 Gain 1 Gain 15k Gain 5 Output 3 +Input 1 8 Gain -Input 2 7 Bypass 2 -Input 150 1.35k UTC386 +Input 3 6 VCC 50k 50k 4 GND GND 4 5 Output ABSOLUTE MAXIMUM RATINGS(Ta=25C ) Characteristic Supply Voltage Power Dissipation Input voltage Operating Temperature Storage Temperature Symbol Vcc Pd Vi Topr Tstg Value 15 660 -0.4~+0.4 -20 to 70 -40 to 125 Unit V mW V C C YOUW ANG ELECTRONI CO. CS LTD 1 UTC386 ELECTRICAL CHARACTERISTICS Characteristic Quiescent circuit current Output Power Voltage Gain Bandwidth Total harmonic distortion Power supply Volatge Rejection Ratio Input Resistance Input Bias current LI NEAR I NTEGRATED CI RCUI T Symbol ICCQ Po GV BW THD SVR Ri IBIAS (Vcc=6V,f=1kHz,Ta=25C, All voltage referenced to GND unless otherwise specified) Test Condition Vi=0 Vcc=6V,RL=8,THD=10% Vcc=9V,RL=16,THD=10% Pin1 and pin 8 open 10F from pin 1 and pin 8 Pin1 and pin 8 open 10F fron pin 1 and pin 8 Vcc=6V,RL=8,Po=125mW, f=1kHz, pin1 and pin 8 open Vcc=6V,f=1kHz, Cbypass=10F, pin1 and pin 8 open Pin2 and pin 3 open Pin1 and pin 8 open Min 250 24 43 Typ. 4 325 500 26 46 300 60 0.2 30 50 250 Max 8 Unit mA mW mW dB dB kHz kHz % dB k nA 28 49 TYPICAL APPLICATION CIRUIT Fig. 1 GV =20dB Vs 6 2 1 8 2 5 0.05F 10 10k 250F Fig. 2 GV =200 Vs 6 1 8 250F 5 7 4 bypass 0.05F 10F Vin 3 UTC386 7 10k 4 Vin 3 UTC386 10 YOUW ANG ELECTRONI CO. CS LTD 2 |
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