Contek TA7343AP Datasheet

TA7343AP LINEAR INTEGRATED CIRCUIT

FM STEREO MULTIPLEX
DECORDER

DESCRIPTION

The Contek TA7343AP is a monolithic integrated circuit

consisting of a phase locked loop FM stereo demodulator. It

is designed for Car stereo, cassette recorder and other

equipment.

FEATURES

*Wide operating supply voltage : Vcc=3V ~ 12V
*High pilot lamp ON sensitivity ( VL(on)=9mV)
*Built-in indicator lamp drive circuit.
*High distortion THD=0.08% at Vi+200Mv

BLOCK DIAGRAM

SIP-9

Input

L.P.F-1

Contek

1 AF DC

Phase
Dector

Buffer

Decorder

L-CH OutputR-CH Output

2 4

Stereo

SW1

19kHz<90

Lamp

Trigger

19kHz<0

o

38kHz

L.P.F-2

Vcc

o

LED

Vcc

76kHz

38khz
check

SW2

FC

1/2 1/2

FM switch

GND

SW1 VCC

SW2 38KHz

1/2

Voltage

Regulator

356798

Vcc

CONTEK

Contek Microelectronics Co.,Ltd.

http://www.contek-ic.com E-mail:[e-mail]

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TA7343AP LINEAR INTEGRATED CIRCUIT

ABSOLUTE MAXIMUN RATING(Ta=25 C)

PARAMETER SYMBOL RATING UNIT

Supply Voltage VCC 12 V

Lamp Voltage VLAMP 16 V

Lamp Current (Continuous) ILAMP 20 mA

Power Dissipation PD 500 mW

Operating Temperature Range TOPR -20 - +70 C

Storage Temperature Range TSTG -40 - +125 C

ELECTRICAL CHARACTERISTICS(Ta=25 C,VCC=8V,f=1KHZ, unless otherwise specified)

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT

Quiescent Circuit Current I

Maximum Input Voltage Vi(max) L+R=90%,P=10%, THD=1% 550 mV

Channel Separation CS L+R=180Mv, P=20mV 36 45 dB

Total Harmonic

Distortion (mono)

Total Harmonic

Distortion (Stereo)

Voltage Gain Gv Vi=200mV -2.0 0 +2.0 dB

Channel Balance CB Vi=200mV 0 1.5 dB

Lamp ON Level V

Lamp OFF Level V

Lamp Hysteresis HY 3 mV

Carrier Leakage Vleak 19kHz, L+R=180mV 34 dB

CCQ

THD1 Vi=200mV 0.08 0.3 %

THD2 L+R=1800mV, P=20mV 0.08 %

L(ON)

L(OFF)

Vi=0 11 18 mA

pilot only 9 15 mV

pilot only 2 6 mV

38kHz, P=20mV 42 dB

CONTEK

Contek Microelectronics Co.,Ltd.

http://www.contek-ic.com E-mail:[e-mail]

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