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Dual Conversion AM Receiver

The MC13030 is a dual conversion AM receiver designed for car radio applications. It includes a high dynamic range first mixer, local oscillator, second mixer and second oscillator, and a high gain AGC’d IF and detector. Also included is a signal strength output, two delayed RF AGC outputs for a cascode FET/bipolar RF amplifier and diode attenuator, a buffered IF output stage and a first local oscillator output buffer for driving a synthesizer. Frequency range of the first mixer and oscillator is 100 kHz to 50 MHz.

Applications include single band and multi–band car radio receivers, and shortwave receivers.

? Operation from 7.5 to 9.0 Vdc

? First Mixer, 3rd Order Intercept = 20 dBm

? Buffered First Oscillator Output

? Second Mixer, 3rd Order Intercept = +5.0 dBm

? No Internal Beats Between 1st and 2nd Oscillator Harmonics

? Signal Strength Output

? Limited 2nd IF Output for Frequency Counter Station Detector

? Adjustable IF Output Station Detector Level

? Adjustable RF AGC Threshold for Both Mixer Inputs

? Two Delayed AGC Outputs for Cascode RF Stage and Diode Attenuator