CA3189 Intersil Corporation, CA3189 Datasheet - Page 4

• Manufacturer Part Number: CA3189
• Description: FM IF System
• Manufacturer: Intersil Corporation

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Block Diagram
NOTES:
10. All resistance values are in
11. L Tunes with 100pF (C) at 10.7MHz. Q
0.02
DELAYED
AGC FOR
RF AMPL
F
10K
INPUT
0.02 F
15
IF
1
3
2
47K
CA3189E
DELAYED
16
RF AGC
IF AMPLIFIER
DETECTOR
AMPL.
LEVEL
FRAME SUBSTRATE
1
ST
4
IF
REGULATORS
TO INTERNAL
14
DETECTOR
LEVEL
2
AMPL.
ND
O
METER
IF
150 A
75 (TOKO No. KACS K586HM or equivalent).
V+
11
DETECTOR
AMPL.
LEVEL
3
RD
33K
IF
QUADRATURE
OUT
CA3189
CIRCUIT
TUNING
METER
13
8
INPUT
4
TUNING METER OUTPUT
22 H
DETECTOR
LEVEL
9
FM
DETECTOR
QUADRATURE
MUTE (SQUELCH)
DETECTOR
DRIVE CIRCUIT
(NOTE 11)
100pF
C =
L
10
REFERENCE
BIAS
ATION
LOGIC
MUTE
TO STEREO
THRESHOLD
LOGIC CIRCUITS
DEVI-
(SQUELCH)
CONTROL
AUDIO
AMPL.
AMPL.
AUDIO
AMPL.
MUTE
AFC
ON CHANNEL
INDICATOR
12
7
6
5
SENSITIVITY
0.33 F
8.2K
AUDIO
OUTPUT
AFC
OUTPUT
470
22K
MUTING
10K
5K