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PDF CA3189 Data sheet ( Hoja de datos )
| Número de pieza | CA3189 | |
| Descripción | FM IF System | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de CA3189 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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www.DataSheet4U.com
May 1999
POSSOIBBLSEOSLUECBTASE3T0PIT8RU9OETDEUPCRTODUCT
CA3189
FM IF System
[ /Title
(CA31
89)
/Sub-
ject
(FM
IF Sys-
tem)
/Autho
r ()
/Key-
words
(Har-
ris
Semi-
con-
ductor,
FM IF
ampli-
fier,
quadrat
ure
detec-
tor,
tuning
meter
out-
put,
lim-
iter,
AFC
circuit,
AGC
cir-
cuit,
mut-
ing cir-
cuit,
indus-
trial
tem-
pera-
Features
Description
• Includes IF Amplifier, Quadrature Detector, AF
Preamplifier, and Specific Circuits for AGC, AFC, Tun-
ing Meter, Deviation-Noise Muting, and ON Channel
Detector
• FM IF Amplifier Applications in High-Fidelity,
Automotive, and Communications Receivers
• Exceptional Limiting Sensitivity -12µV (Typ) at -3dB
Point
• Low Distortion -0.1% (Typ) (with Double-Tuned Coil)
• Single-Coil Tuning Capability
• Improved S + N/N Ratio
• Externally Programmable Recovered Audio Level
• Provides Specific Signal for Control of Interchannel
Muting (Squelch)
• Provides Specific Signal for Direct Drive of a Tuning
Meter
• On Channel Step for Search Control
• Provides Programmable AGC Voltage for RF Amplifier
• Provides a Specific Circuit for Flexible Audio Output
• Internal Supply Voltage Regulators
• Externally Programmable “On” Channel Step Width,
and Deviation at Which Muting Occurs
The Harris CA3189E is a monolithic integrated circuit that
provides all the functions of a comprehensive FM-lF system.
The block diagram of the CA3189E includes a three-stage
FM-lF amplifier/limiter configuration with level detectors for
each stage, a doubly-balanced quadrature FM detector and
an audio amplifier that features the optional use of a muting
(squelch) circuit.
The advanced circuit design of the IF system includes desir-
able deluxe features such as programmable delayed AGC
for the RF tuner, an AFC drive circuit, and an output signal to
drive a tuning meter and/or provide stereo switching logic. In
addition, internal power-supply regulators maintain a nearly
constant current drain over the voltage supply range of
+8.5V to +16V.
The CA3189E is ideal for high-fidelity operation. Distortion in
a CA3189E FM-lF System is primarily a function of the
phase linearity characteristic of the outboard detector coil.
The CA3189E has all the features of the CA3089E plus addi-
tions. See CA3189E features compared to the CA3089E in
Table 1.
Part Number Information
PART NUMBER
CA3189E
TEMP.
RANGE (oC)
PACKAGE
-40 to 85 16 Ld PDIP
PKG.
NO.
E16.3
Pinout
CA3189
(PDIP)
TOP VIEW
IF IN 1
INPUT
BYPASS
2
3
FRAME 4
MUTE CONTROL 5
AUDIO OUT 6
AFC OUT 7
IF OUT 8
16
DELAYED AGC
15
14 SUBSTRATE (GND)
13
TUNING
METER OUT
12 MUTE LOGIC
11 V+
10 REF BIAS
9
QUADRATURE
INPUT
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
1-800-4-HARRIS or 407-727-9207 | Copyright © Harris Corporation 1999
1
File Number 1046.4
1 page  
CA3189
Schematic Diagrams
www.DataSheet4U.com
C11
1
IF AMPLIFIER
A
Q9
R6 R7
2K 2K
R10
2K
C12 C13
11
B
R11
2K
C14
1
C
Q15
R18 R19
2K 2K
Q21
R23 Q22
2K
R27
750
R24
500
R25
1.52K
Q3 Q4
IF
INPUT
1
Q1 Q2
2
INPUT
BYPASSING
Q6
R2
2.8K R3
533
V+ V+
Q8
Q8A
Q7A
Q7
R13A
2.1K
Q10 Q11
Q12
R12A
2.1K
R13
2.1K
R14
533
R12
2.1K
Q14
Q14A
Q13
Q13A
R16A
2.2K
Q16 Q17
Q18
R16
2.8K
R17
533
R15A
2.2K
R15
2.8K
V+
Q19
Q20 R28
R20 750
2K
R21
500
R22
1.52
K
3
R1
2.8K
V+
Q107
D8
R82
15.6K
R51
5K
Q108
C5
2
R80
4.12K
Q106Q105
Q59
C6
3 Q61
Q60
880Ω
R84
R81
1.28K
1K
R83
500
R52
400
C7
3 Q64
Q63
Q62
R53
600
C8
3 Q68
Q69
Q70
R56
600
Q74
R59
212
V+
R60
424
Q75 Q77
Q84
Q76
R61
4K
R61A
1.1K
D1
R62
5K
15 16
AGC FOR
RF AMPL.
LEVEL DETECTOR AND METER CIRCUIT
13
TUNING
METER
A
B
C
D
E
F
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet CA3189.PDF ] | |
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