FM IF Subsystem with CA3189E


Posted on Dec 18, 2012

TheCA3189E is a comprehensive FM-IF system designed for high fidelity FM tuners. It includes a three stage FM-IF amplifier/limiter configuration with level detectors for each stage, a double-balanced quadrature FM detector and an audio amplifier that features the optional use of a muting circuit. The advanced circuit design includes desirable special features such as 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 +8V to +16V. Distortion is primary a function of the phase linearity characteristics of the external detector coil.



FM IF Subsystem with CA3189E - image 1
Click here to download the full size of the above Image.

Features: 1.Exceptional limiting sensitivity :10uV(typical) at -3dB 2.Low distortion: 0.1% (with double-tuned coil) typical 3. Single coil tuning capability. 4. High recovered audio: 500mV (typical). 5. Internal supply-voltage regulators. 6. AGC threshol




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Interfacing Alphanumeric LCD To Microcontroller
Digital Pressure Gauge
Switching Circuit
Off lining switching power supply solution of OnSemiNCP107515W low power consumption
dc servo motor controller
Sense of Time tester circuit
Electronic Transformer Coupled Oscillators



Top