60_kHz_PRECISION_RECTIFIER

Published:2009/7/6 6:54:00 Author:May | From:SeekIC

Usable full-power response of typical opamp is boosted to 60 kHz while giving 300-kHz small-signal band width. Circuit uses transistors to provide speed boosting gain during transition from one precision rectifier diode to the other in feedback loop of opamp. Added stage is driven from power-supply current drains of opamp. Article traces operation of circuit in detail-J. Graeme, Boost Precision Rectifier BW above That of Op Amp Used, EDN Magazine, July 5, 1974, p 67-69.



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