FAST_DUMP_SWITCH_

Published:2009/7/10 3:46:00 Author:May | From:SeekIC

Requires only 350 ns to dump 6-V output to level of 3 mV. Transistors are connected so one of them is biased in forward mode independently of output polarity. Both transistors tum on during dump interval.Transistor operating in forward mode determines initial discharge rate until it saturates, after which inverted-mode transistorcontinuesto discharge capacitor. Offset voltage error is only -25 μV. Opamp is Analog Devices 120 or equivalent having unityqain bandwidth above 100 MHz and slew rate above 200 V/us.-F. Tarico, Fast Bipolar Dump Switch Has Low Offset, EDN Magazine,Nov5,1974.p 66.



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