Contek TA7342P Datasheet
TA7342P LINEAR INTEGRATED CIRCUIT
PLL FM STEREO MULTIPLEX
DESCRIPTION
The Contek TA7342P is a PLL FM stereo multiplex
integrated circuit, designed for portable radio
applications.
FEATURES
*Wide operating supply voltage : Vcc=1.8V-5V
*Suitable for LED driving : Ilamp=8mA(max.)
*VCO stop capability (The VCO is stopped when the
LPF2 termianl is connected to the power supply line,
and the the stereo indicator is turn off.)
*Easy Adjustment (The monitored free running
frequency of VCO is 76kHz at stereo Lamp terminal
BLOCK DIAGRAM
SIP-9
CONTEK
Contek
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
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TA7342P LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS(Ta=25 C )
Supply Voltage Vcc 6 V
Lamp Voltage V
Lamp Current (continuous) I
Power Dissipation P
Operating Temperature Range T
Storage Temperature Range T
ELECTRICAL CHARACTERISTICS
( Ta=25 C ,Vcc=3V, f=1kHz, unless otherwise specified)
Quiescent Circuit Current I
Input Resistance R
Output Resistance R
Maximum Input Voltage Vi(max) Lj+R=90%, P=10%
Channel Separation CS L+R=180mV, P=20mV,fm=1kHz 30 35 dB
Total Harmonic Distortion(mono) THD1 Vi=200mVrms (Monaural) 0.4 1 %
Total Harmonic Distortion (stereo) THD2 L+R=1800mVrms,p=20mVrms,
Voltage Gain G
Channel Balance C
Lamp ON Level V
Lamp OFF Level V
Stereo Lamp Hysteresis V
Carrier Leakage C.L. 19kHz,L+R=180mV,P=20mVrms 31 dB
Capture range C.R. P=20mVrms +-3 %
SCA Rejection Ratio SCA Rej. P=20mVrms, L+R=160mVrms,
Signal to Noise Ratio S/N
PARAMETER SYMBOL VALUE UNIT
LAMP
LAMP
D
OPR
STG
8V
8mA
500 mW
-25 - +75
-55 +150
C
C
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
CCQ
IN
OUT
At Lamp off 4.5 8 mA
10
456
kW
kW
400 mVrms
THD=5%, fm=1kHz
0.5 %
fm=1kHz
V
B
L(ON)
L(OFF)
H
Vi=200mVrms -6.5 -5 -3.5 dB
Vi=200mVrms 0 1.5 dB
pilot only 9 15 mV
pilot only 2 6 mV
From ON to OFF 3 mVrms
38kHz,L+R=180mV,P=20mVrms 60 dB
80 dB
SCA=200mVrms, fSCA=67kHz
Vin=200mVrms, Rg=620W
82 dB
DC ELECTRICIAL CHARACTERISTICS
TERMINAL ITEM DESCRIPTION VALUE UNIT
1 INPUT 0.7 V
2 LPF-1 2.4 V
3 VCC 3.0 V
4 VO 2.5 V
5GND 0V
6 ST. LAMP - V
7 LPF-2 2.4 V
8 L-CH OUTPUT 1.0 V
9 R-CH OUTPUT 1.0 V
CONTEK
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
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