UTC TA7343AP LINEAR INTEGRATED CIRCUIT

UTC TA7343AP LINEAR INTEGRATED CIRCUIT
UTC TA7343AP LINEAR INTEGRATED CIRCUIT
FM STEREO MULTIPLEX
DECORDER
DESCRIPTION
The UTC TA7343AP is a monolithic integrated circuit
consisting of a phase locked loop FM stereo demodulator.
It
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is designed for Car stereo, cassette recorder and other
equipment.
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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
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BLOCK DIAGRAM
SIP-9
Vcc
L.P.F-1
2
1
AF
Phase
Dector
Vcc
76kHz
DC
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Input
4
1/2
1/2
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19kHz<90
Lamp
Trigger
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Buffer
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19kHz<0
Stereo
Decorder
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8
UTC
1/2
FM switch
Voltage
Regulator
38kHz
9
7
L.P.F-2
6
5
SW2
SW1
L-CH OutputR-CH Output
3
GND
LED
38khz
check
Vcc
FC
SW1 VCC
SW2 38KHz
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R110-004,A
UTC TA7343AP LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUN RATING(Ta=25°C)
PARAMETER
RATING
UNIT
VCC
12
V
Lamp Voltage
VLAMP
16
V
Lamp Current (Continuous)
ILAMP
20
mA
mW
PD
500
Operating Temperature Range
TOPR
-20 - +70
Storage Temperature Range
TSTG
-40 - +125
°C
°C
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Power Dissipation
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SYMBOL
Supply Voltage
ELECTRICAL CHARACTERISTICS(Ta=25°C,VCC=8V,f=1KHZ, unless otherwise specified)
PARAMETER
Quiescent Circuit
SYMBOL
TEST CONDITIONS
ICCQ
Vi=0
Vi(max)
L+R=90%,P=10%, THD=1%
CS
L+R=180Mv, P=20mV
Maximum Input Voltage
Channel Separation
Total Harmonic
THD1
Distortion (mono)
Total Harmonic
THD2
Distortion (Stereo)
Voltage Gain
Gv
Channel Balance
CB
VL(ON)
Lamp OFF Level
VL(OFF)
Lamp Hysteresis
HY
Vleak
UNIT
18
mA
550
36
45
0.08
L+R=1800mV, P=20mV
0.08
Vi=200mV
-2.0
Vi=200mV
pilot only
pilot only
2
0.3
mV
dB
%
%
0
+2.0
dB
0
1.5
dB
9
15
mV
6
mV
3
mV
19kHz, L+R=180mV
34
dB
38kHz, P=20mV
42
dB
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Carrier Leakage
MAX
11
Vi=200mV
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Lamp ON Level
TYP
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Current
MIN
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R110-004,A
UTC TA7343AP LINEAR INTEGRATED CIRCUIT
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TEST CIRCUIT
APPLICATION INFORMATION (refer to test circuits)
External Components
1.) Input coupling capacitor(C1)
The recommended value is 10µF. If smaller vlaues than 10ΩF are used, low frequency separation will worsens,
and is larger values are used, POP noise occurs strongly.
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2.) Low Pass Filter (C2,C1,R1)
This is the low pass filter fr the PLL, which is determined the capture range and THD at low frequency.
3.) VCO network (C4,R2,R7)
The VCO free running frequency is adjusted by connecting a frequency counter to monitor the 38kHz output of
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Pin6.
4.) Decoder output (Pin8,9)
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These components provide Right and Left channel output load circuits. The recommended circuits as follows:
UTC
UNISONIC TECHNOLOGIES CO., LTD.
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QW-R110-004,A
UTC TA7343AP LINEAR INTEGRATED CIRCUIT
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TYPICAL PERFORMANCE CHARACTERISTICS
UTC
UNISONIC TECHNOLOGIES CO., LTD.
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QW-R110-004,A
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UTC TA7343AP LINEAR INTEGRATED CIRCUIT
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UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R110-004,A
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