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一种高频信号增益可调的光驱动电路及其调控方法
InventionUnknown
10Claims · 2 independent
§ Ⅰ
Dossier Overview
Inventor
巫伟武
Filing Date
Sep 11, 2026
Publication Date
Oct 27, 2026
IPC Classification
H03F 1/32 (2006.01)H03F 1/08 (2006.01)H03F 1/26 (2006.01)H03G 3/30 (2006.01)H03K 17/78 (2006.01)
本发明公开一种高频信号增益可调的光驱动电路及其调控方法,电路包括运算放大器、光耦器件、第一开关管至第六开关管组成的权值电阻阵列、使能管及反馈采样点。运算放大器构成带相位补偿的电压负反馈环路,反馈采样点经第二电阻连接反相输入端;权值电阻阵列接在反馈采样点与地之间,通过开关管改变反馈环路等效负载实现64级增益调节;使能管源极直接连接反馈采样点、漏极接地,导通时将反馈采样点直接接地,旁路权值阵列,工作在固定增益模式。本发明通过负反馈采样点负载调节和使能管直连钳位旁路,消除开关毛刺、隔离寄生参数,适用于高频示波器、信号采集、波形输出等场景。
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