Norton_low_drift_ramp_and_hold

Published:2009/7/17 4:59:00 Author:Jessie | From:SeekIC

This circuit uses two sections of an LM3900 to form a low-drift ramp-and-hold circuit with a zero-drift adjustment. If both inputs are at zero volts, the circuit is in hold (after proper zero-drift adjustment). Raising either input causes the dc output to ramp up or down, depending on which input goes positive. The ramp slope is a function of the input-voltage magnitude. Additional inputs can be placed in parallel to increase the input-control variables. National Semiconductor, Linear Applications Handbook 1991 p 249



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