Datasheet Summary
GB4551 Video Buffer with Strobed DC Restore
DATA SHEET
Features
- accurate clamping to within ±1mV
- ultra low differential gain (0.03% typ.) and differential phase (0.03o typ.)
- wideband unity gain, can typically be flattened to ±0.1dB at 30MHz
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DESCRIPTION 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...