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參數資料
| 型號： | CA3089M1 |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 接收器 |
| 英文描述： | FM IF System |
| 中文描述： | FM, AUDIO DEMODULATOR, PDSO20 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 236K |
| 代理商： | CA3089M1 |
8-27
November 1996
CA3089
FM IF System
Features
For FM IF Amplifier Applications in High-Fidelity,
Automotive, and Communications Receivers
Includes: IF Amplifier, Quadrature Detector, AF
Preamplifier, and Specific Circuits for AGC, AFC, Muting
(Squelch), and Tuning Meter
Exceptional Limiting Sensitivity
at -3dB Point. . . . . . . . . . . . . . . . . . . . . . . . . . 12
μ
V (Typ)
Low Distortion:
(with Double-Tuned Coil). . . . . . . . . . . . . . . . 0.1% (Typ)
Single-Coil Tuning Capability
High Recovered Audio. . . . . . . . . . . . . . . . 400mV (Typ)
Provides Specific Signal for Control of Interchannel
Muting (Squelch)
Provides Specific Signal for Direct Drive of a Tuning
Meter
Provides Delayed AGC Voltage for RF Amplifier
Provides a Specific Circuit for Flexible AFC
Internal Supply-Voltage Regulators
Description
Intersil CA3089 is a monolithic integrated circuit that pro-
vides all the functions of a comprehensive FM-IF system.
The block diagram shows the CA3089 features, which
include a three-stage FM-IF 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 delayed AGC for the RF tuner,
and AFC drive circuit, and an output signal to drive a tuning
meter and/or provide stereo switching logic. In addition, inter-
nal power supply regulators maintain a nearly constant cur-
rent drain over the voltage supply range of +8.5V to +16V.
The CA3089 is ideal for high-fidelity operation. Distortion in a
CA3089 FM-IF System is primarily a function of the phase
linearity characteristic of the outboard detector coil.
Pinout
Ordering Information
PART NUMBER
(BRAND)
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
CA3089E
-40 to 85
16 Ld PDIP
E16.3
CA3089M1
(3089M)
-40 to 85
20 Ld SOIC
M20.3
CA3089
(PDIP)
TOP VIEW
CA3089
(SOIC)
TOP VIEW
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
IF IN
INPUT BYPASS
DC FB BYPASS
FRAME GND
MUTE CONTROL
AUDIO OUT
IF OUT
AFC OUT
NC
SUBSTRATE (GND)
TUNING METER OUT
MUTE LOGIC
V+
REF BIAS
QUADRATURE INPUT
DELAYED AGC
11
12
13
14
15
16
17
18
20
19
10
9
8
7
6
5
4
3
2
1
GND
IF IN
INPUT BYPASS
DC FB BYPASS
FRAME GND
MUTE CONTROL
AFC OUT
AUDIO OUT
IF OUT
GND
GND
GND
SUBSTRATE (GND)
TUNING METER OUT
DELAYED AGC
MUTE LOGIC
V+
REF BIAS
QUADRATURE INPUT
NC
File Number
561.3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright Intersil Corporation 1999
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