Video_amplifier_dc_stabilizer_differential_inputs

Published:2009/7/22 22:29:00 Author:Jessie | From:SeekIC

This circuit shows a way to get full differential inputs with dc-stabilized operation. A1 and A2 both (differentially) sense the input at gains of 10. The A3 output is an undistorted, amplified version (in this case, time 10) of the input. The circuit is adjusted by applying a square wave and adjusting the ac gain for the squarest comers, and the dc gain-match for a flat top. Circuit bandwidth exceeds 35 MHz, slew rate is 450 V/μs, and dc offset is about 200μV.



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