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