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CA3089_02

更新时间: 2024-01-23 00:15:37
品牌 Logo 应用领域
英特矽尔 - INTERSIL /
页数 文件大小 规格书
8页 460K
描述
FM IF System

CA3089_02 数据手册

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CA3089  
®
October 2002  
FN0561.4  
FM IF System  
Features  
.
Description  
• For FM IF Amplifier Applications in High-Fidelity,  
Automotive, and Communications Receivers  
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.  
• Includes: IF Amplifier, Quadrature Detector, AF  
Preamplifier, and Specific Circuits for AGC, AFC, Muting  
(Squelch), and Tuning Meter  
• Exceptional Limiting Sensitivity  
at -3dB Point. . . . . . . . . . . . . . . . . . . . . . . . . . . 12µV (Typ)  
• Low Distortion:  
(with Double-Tuned Coil) . . . . . . . . . . . . . . . . . 0.1% (Typ)  
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.  
• Single-Coil Tuning Capability  
• High Recovered Audio . . . . . . . . . . . . . . . . . .400mV (Typ)  
• Provides Specific Signal for Control of Interchannel Muting  
(Squelch)  
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.  
• 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  
Part Number Information  
PART  
NUMBER  
TEMP. RANGE  
o
( C)  
PACKAGE  
16 Ld PDIP  
20 Ld SOIC  
PKG. NO.  
E16.3  
CA3089E  
-40 to 85  
-40 to 85  
CA3089M1  
(3089M)  
M20.3  
Pinouts  
CA3089  
(PDIP)  
CA3089  
(SOIC)  
TOP VIEW  
TOP VIEW  
1
2
3
4
5
6
7
8
9
GND  
GND  
IF IN  
20  
19  
IF IN  
1
2
3
4
5
6
7
8
16 NC  
DELAYED AGC  
INPUT BYPASS  
DC FB BYPASS  
FRAME GND  
MUTE CONTROL  
AUDIO OUT  
AFC OUT  
15 DELAYED AGC  
14 SUBSTRATE (GND)  
13 TUNING METER OUT  
12 MUTE LOGIC  
11 V+  
INPUT BYPASS  
DC FB BYPASS  
FRAME GND  
MUTE CONTROL  
AUDIO OUT  
AFC OUT  
18 GND  
17 SUBSTRATE (GND)  
16 TUNING METER OUT  
15 MUTE LOGIC  
14 V+  
13 REF BIAS  
10 REF BIAS  
IF OUT  
12  
QUADRATURE INPUT  
9
QUADRATURE INPUT  
IF OUT  
GND 10  
11 NC  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright © Intersil Americas Inc. 2002. All Rights Reserved  
1
All other trademarks mentioned are the property of their respective owners.  

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