CA3089
Typical Applications
(Continued)
FIGURE 6A. BOTTOM VIEW OF PRINTED CIRCUIT BOARD
FIGURE 6B. COMPONENT SIDE - TOP VIEW
FIGURE 6. ACTUAL SIZE PHOTOGRAPHS OF THE CA3089E AND OUTBOARD COMPONENTS MOUNTED ON A PRINTED-CIRCUIT BOARD
Block Diagram
L
(NOTE 16)
QUADRATURE
INPUT
V+
22µH
C=
100pF
9
10
REFERENCE
BIAS
AFC
AMPL.
2
ND
IF
AMPL.
3
RD
IF
AMPL.
QUADRATURE
DETECTOR
AFC
OUTPUT
AUDIO
OUTPUT
MUTING
SENSITIVITY
TO INTERNAL
REGULATORS
IF
INPUT
1
IF AMPLIFIER
1
ST
IF
AMPL.
11
IF
OUT
8
7
AUDIO
AMPL.
AUDIO
MUTE
(SQUELCH)
CONTROL
AMPL.
6
3
0.02
µF
0.02µF
2
LEVEL
DETECTOR
LEVEL
DETECTOR
LEVEL
DETECTOR
LEVEL
DETECTOR
5
DELAYED
AGC FOR
RF AMPL
15
10K
FRAME
SUBSTRATE
150µA
METER
33K
TUNING
METER
CIRCUIT
MUTE (SQUELCH)
DRIVE CIRCUIT
470
12
0.33µF
TO STEREO
THRESHOLD
LOGIC CIRCUITS
120K
500K
4
14
13
TUNING METER OUTPUT
NOTES:
15. All resistance values are in ohms.
16. L Tunes with 100pF (C) at 10.7MHz.
17. Q
O
≅
75 (G.I. EX22741 or equivalent).
18. Pin numbers refer to 16 lead DIP.
8-30
INTERSIL [ INTERSIL CORPORATION ]
