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OPA241能否放大微小电流信号?

Other Parts Discussed in Thread: OPA241, OPA320, OPA171

OPA241一般应用在什么场合呢?

电路中的传感器输出信号为0-300nA,尝试过很多次,使用OPA241无法放大该信号,输出端无输出,请问有人遇到类似情况吗?

一些说明(请见下图):

1)传感器输出为0-300nA电流信号;

2)场效应管防止漂移;

3)T1为1.2V稳压管;

4)电位器R10用于调零;

5)电阻R12与电位器R11用于放大信号。