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CA3089E Datasheet(PDF) 1 Page - Intersil Corporation |
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CA3089E Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 7 page 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 µV (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 (oC) 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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