CD7343CS Datasheet, PDF (3/5 Pages) List of Unclassifed Manufacturers – FM STEREO MULTIPLEX DECODER

Silicore
TEST CIRCUIT
CD7343CS
CD7343CS
IN SW1 _C1 ¹ 2 3
SG ^V~1
10uF
45
R2
6 7 8 9 ^4.7uF _{SW2 SW3}
330K
BPF
4.7uF
C4
3.3K
SW3
C2
2.2uF
Vcc=8V
Hz V~2
Hz V~3
BPF: 19kHz 55dB 38kHz 55dB L.P.F
APPLICATION INFORMATION (refer to test circuit)
External Components
1. Input coupling capacitor (C1)
The recommended value is 10µF. If smaller values than 10µF are used, low
frequency separation will worsens, and if large values are used ,POP noise occurs
strongly.
2. Low Pass Filter (C2, C1, R1)
This is the low Pass filter for 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 Pin6 .
4. Decoder Output (Pin8,9)
These components provide Right and Left channel Output load circuits . The
recommended circuits as follows:
From
Pin 8,9
4.7uF
400mH
1nF
Output
2.2K
68nF
From
Pin 8,9
4.7uF
Output
LPF
19kHz<55dB
38kHz<55dB
SHAOXING SILICORE TECHNOLOGY CO.,LTD
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