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Original question:
OPA855: OPA855
您好，请把正输入端直接接地试一下。
试过了，还是不行
您好，信号电流远小于偏置电流Ib=12uA, 同时建议您用双电源， 请参考下方的帖子中的电路。
e2e.ti.com/.../opa855-opa855-when-the-opa855-is-designed-for-tia-what-is-the-maximum-closed-loop-bandwidth-it-can-achieve
IG1是幅值为1nA,频率为100HZ的交流电。为什么VOUT波形没有放大50K呢，反而是一条直流线，在2.23V附近震荡
