Product Summary

The FQD1236/PH-5 is a multi-standard desktop video module. The FQD1236/PH-5 contains an input buffer and automatic gain control (AGC) circuit for audio and voice band signals. Circuit operation is optimized by providing user-adjustable compression ratio and time constant. A downward expansion (noise gating) feature reduces background and circuit noise below 500 μV. The rotation point determines the output signal levels before limiting (referred to the input), and is 40 mV for the FQD1236/PH-5-1 and 100 mV for the FQD1236/PH-5-2.

Parametrics

FQD1236/PH-5 absolute maximumr ratings: (1)Ambient temperature: 25℃; (2)relative humidity: 60%; (3)supply voltage: 5V; (4)aerial source impedance: 75Ω; (5)video output load: 75Ω; (6)AF1 sound output load: 100kΩ.

Features

FQD1236/PH-5 features: (1)multi-standard TV systems broadcast reception; (2)true 5V device; (3)full frequency range from channel E2 to channel E69; (4)PLL controlled tuning; (5)true-synchronous vision IF demodulator; (6)ultra linear FM PLL demodulator.

Diagrams

FQD1236/PH-5 block diagram

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