M52342 查看數據表（PDF） - MITSUBISHI ELECTRIC
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M52342 Datasheet PDF : 13 Pages
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Pin 11 (AUDIO F/B)
5kΩ
5kΩ
MITSUBISHI ICs (TV)
M52342FP
PLL-SPLIT VIF/SIF IC
terminal voltage : 2.1V
11
The FM detector can respond to several kinds of SIF signals without an
adjustment and external components by adopting the PLL technique.
It also is in compliance with the multi-SIF by selecting an appropriate
deemphasis and audio output amplifier using the pin14 switch.
The capacitor between pin 11 and 12, which fixes the deemphasis
characteristics, can be determined considering the combination of an
equivalent resistance of the IC and this capacitor itself.
Pin 12 (AF OUTPUT)
In the 4.5MHz application, the internal voltage gain is increased by 6-dB in
comparison with the other applications and then the signals are delivered
through an emitter follower.
12
terminal voltage : 2.2V
Pin 13 (LIMITER INPUT)
Bias
terminal voltage : 2.2V
13
8kΩ
8kΩ
The input impedance is 8kΩ.
Pin 14 (AFT SW, NP SW)
SIF4.5MHz : H
Others : L
10kΩ
VCC (5V)
2kΩ
14
22kΩ
AFT Defeat :H
AFT ON :L
It works as a switch by connecting the resistor to 5V(High)
or GND (Low), alternately.
10kΩ
H
H
L
L
20kΩ
H
L
H
L
AF AMP
AFT
Pin 14
applied voltage
4.5MHz
4.5MHz
OTHER
OTHER
DEFFET
NORMAL
DEFFET
NORMAL
4.4 to 5.0V
2.7 to 4.0V
1.0 to 2.3V
0 to 0.6V
The terminal voltage is set by the external resistors
because of an open base input.
10
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