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近来在做opa129的电荷放大器的实验，想知道为何在没有输入的情况下opa129会有直流偏置电压输出呢？
亲；从器件质量到PCB表面泄漏，从焊料残存到板材吸潮特性，都会导致直流偏置输出。因此；需要你介绍清楚你是咋做的；偏置多大；测量用具是啥。
你好，
多大的直流偏置？
