Dual Recording / Playback Pre-Amplifier Circuit
UTC7312 S
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aDUAL RECORDING/PLAYBACK D CIRCUIT WITH . PRE-AMPLIFIER w ALC
DESCRIPTION
The UTC7312 is a monolithic i...
Description
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.
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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
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13 ALC 2
12
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Phase compensat ion of ch2
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NFof CH2
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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
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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...
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