UTC7312

UTC7312 S w w aDUAL RECORDING/PLAYBACK D CIRCUIT WITH . PRE-AMPLIFIER w ALC DESCRIPTION The UTC7312 is a monolithic integrated circuit designed for dual pre-amplifier circuit with ALC for record /playback amplifier of cassette tape recorder. ta e e h U 4 t m o .c LI NEAR I NTEGRATED CI RCUI T 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=5V ~ 12V Low Power ON shock noise BLOCK DIAGRAM Rippli filter ALC input Ch 2 Vcc 14 Ripple Filter Phase compensat ion of ch1 ALC Time constant NFof CH1 ALC input Ch 1 Output 1 Input of Ch1 w w w t a .D 13 ALC 2 12 S a 11 4 e h Phase compensat ion of ch2 U 4 t e NFof CH2 .c m o DIP-14 Output 2 10 9 Ch2 Amp Ch1 Amp 1 GND 3 5 6 Input of Ch2 8 7 YOUW ANG ELECTRONI CS CO. LTD w w w .D a S a t e e h 1 U 4 t m o .c UTC7312 Characteristic Supply Voltage Supply Current Power Dissipation Operating Temperature Storage Temperature LI NEAR I NTEGRATED CI RCUI T Symbol Vcc Icc PD Topr Tstr ABSOLUTE MAXIMUM RATINGS(Ta=25°C ) Value 14 50 700 -55 to 125 -65 to 150 Unit V mA mW °C °C ELECTRICAL CHARACTERISTICS Characteristic Quiescent current Operating voltage Closed-llop Voltage Gain Total Harmonic Distortion Output Voltage Output noise Voltage ALC Voltage ALC Width Channel Balance ( Ta=25°C ,Vcc=6V,f=1kHz,,RL=5.1kΩ,unless otherwise specified) Symbol ICCQ Vcc Gvc THD Vo V...