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CA3088, CA3088E, CA3089

Table of contents:
Info of CA3088
Info of CA3088E
Info of CA3089

CA3088, CA3088E, CA3089 Selling Leads, Datasheet

MFG:RCA Package Cooled:DIP D/C:08+/09+

CA3088, CA3088E, CA3089 Datasheet download

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Part Number: CA3088

MFG: RCA

Package Cooled: DIP

D/C: 08+/09+

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CA3088E General Description

The CA3088E, a monolithic integrated circuit, is an AM subsystem that provides the converter, IF amplifier, detector, and audio preamplifier stages for an AM receiver.

The CA3088E also provides internal AGC for the first IF amplifier stage, delayed AGC for an optional external RF amplifier, a buffer stage to drive a tuning meter, and terminals facilitating the optional use of a tone control. Figure 2 is a functional diagram of the CA3088E. The signal from the low-noise converter is applied to the first IF amplifier and is then coupled to the second IF amplifier. This IF signal is then detected and externally filtered. The resultant audio signal is applied to an audio preamplifier. Optionally, a tone control circuit may be connected at the junction of the detector circuit and the audio preamplifier. The gain of the first IF amplifier stage is controlled by an internal AGC circuit.The CA3088E supplies a delayed AGC signal output for use with an external RF amplifier. A buffered output signal is also available for driving a tuning meter. A DC voltage, internally regulated by a Zener diode, supplies the second IF amplifier, the AGC and tuning meter circuits and may also be used with any other stage.

The CA3088E features four independent transistor amplifiers, each incorporating internal biasing for temperature tracking. These amplifiers are particularly useful in generalpurpose amplifier, oscillator, and detector applications in a wide variety of equipment designs.

CA3088E Maximum Ratings

Supply Voltage
(Across Term. 5 and Terms. 3, 6, 13, 16, Respectively) . . . . . 16V
Output Current
Terminals 3, 6, 13, 16, (Respectively). . . . . . . . . . . . . . . . . 10mA
Terminal 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA

CA3088E Features

• Excellent Overload Characteristics
• AGC for IF Amplifier
• Buffered Output Signal for Tuning Meter
• Internal Zener Diode Provides Voltage Regulation
• Two IF Amplifier Stages
• Low-Noise Converter and First IF Amplifier
• Low Harmonic Distortion (THD)
• Delayed AGC for RF Amplifier
• Terminals for Optional Inclusion of Tone Control
• Operates from Wide Range of Power Supplies: V+ = 6V to 16V
• Optional AC and/or DC Feedback on Wide-Band Amplifier
• Array of Amplifiers for General-Purpose Applications
• Suitable for Use With Optional External RF Stage, Either MOS or Bipolar
• Related at:
- Refer to AN6022 for Application Note Information

CA3088E Connection Diagram

CA3089 General Description

Intersil CA3089 is a monolithic integrated circuit that provides 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-alanced 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 desirable 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, internal power supply regulators maintain a nearly constant current 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.

CA3089 Maximum Ratings

Supply Voltage
Between V+ and Frame GND. . . . . . . . . . . . . . . . . . . . . . . . . .16V
Between V+ and Substrate GND . . . . . . . . . . . . . . . . . . . . . . .16V
DC Current (Out of Delayed AGC). . . . . . . . . . . . . . . . . . . . . . 2mA

CA3089 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. . . . . . . . . . . . . . . . . . . . . . . . . . . 12V (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

CA3089 Connection Diagram

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