DIFFERENTIAL_INPUT_VARIABLE_GAIN

Published:2009/7/9 5:05:00 Author:May | From:SeekIC

Gainof A3 is varied by modifying feedback returned to R4.A4serves as active attenuator in feedback path presenting constant zero-impedancesource to R4 as required for maintaining goodbalance and high CMRR，With values shown,galn can be varied from unitγ to 300-.W.G.Jung,IC Op-Amp Cookbook,''Howard W,Sams,Indianapolis,IN,1974,ρ 238－239.



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