To overcome the oscillation problem of traditional voltage type peak holding circuits and improve the testing speed of peak holding circuits.This article designs a new peak holding device with ADA4817 operational amplifier as the core.In the design,LTspice software is used to simulate and analyze the factors that affect the peak holding effect,and appropriate compensation methods are used to solve the oscillation problem of the circuit.Test the performance of the peak maintainer using two input forms:a signal generator combined with the main amplifier and a nuclear signal simulator.The results show that the peak holder can measure pulse signals with a rising edge time of about 250 ns,and the linearity is good,meeting the design requirements.
维普
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