ZXFV4089 - Video Amplifier With DC Restoration

The ZXFV4089 is a DC restoring circuit and low-distortion Video Amplifier It is specially designed to provide brightness level stability as a 'black level clamp' in Video systems with very low distortion and low power consumption. A high fidelity Video Amplifier is combined with a sample-hold Switch circuit using an external coupling capacitor to provide level-shifting of the Video output such that a time-gated sample of the waveform is set to be equal to an external reference voltage (usually zero voltage). A bufferred TTL/CMOS Logic input signal controls the Switch The gain is set externally by two resistors. In a typical appliation, the sample-hold circuit is gated on during part of the back-porch interval of an Analog Video waveform. Then the Video waveform is stabilised for the remainder of the line-scan interval.
By Zetex Semiconductors plc.
ZXFV4089 's PackagesZXFV4089 's pdf datasheet
ZXFV4089N8TA SO
ZXFV4089N8TC SO




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ZXFV4089 Application circuits
ZXFV4089 circuits
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