Video Buffer with Strobed DC Restore

Posted on Jul 28, 2012

The GB4551 is a high performance video buffer with DC restore primarily used for accurate back porch clamping. The circuit features a wideband differential amplifier that can be configured as a gain stage. The output signal voltage is limited to +2V above the clamp level in order to prevent damage to crosspoints or other circuits connected to the output.

The clamping action occurs when the STROBE (STB) input is taken to ground. A typical application would be for DC restoration during the back porch period. In this case the negative-going back porch pulse would be derived from an external sync separato

Leave Comment

characters left:

New Circuits



Popular Circuits

Fuzz box 5
frequency synthesizer
fast voltage driven current source
interfacing of led wiht avr atmega16
auto answering circuit
Car Battery Charger Circuit
Simple but reliable car battery tester
Convert Digital Mains Timer To Low Voltage
Multifunction Passive 7400 RFID Tag
Lantern controller circuit diagram of a two-dimensional