PRECISION_ENVELOPE_DETECTOR

Published:2009/7/6 2:02:00 Author:May | From:SeekIC

This circuit is useful for signal-processing sonar data recorded on an instrumentation-quality analog tape recorder. The envelope detector utilizes ready available parts, and furnishes accuracy beyond 100 kHz. Two LM301 op amps connected as precision absolute-value circuits use 2-pole frequency compensa-tion for increased slew rate. And one section of an LM324 quad op amp connected in a Butterworth LPF configuration subjects the rectifier's output to a low-pass filter.



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