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咨询一款类似TLC2201实现I/V转换的运放芯片

Other Parts Discussed in Thread: TLC2201, OPA132, LMP7721, OPA145, LMP7701, OPA140, OPA847, OPA657

你好!咨询一款运放,输入电流0~1250nA,频率是50KHz。用TLC2201仿真时,如果输入2.5nA,波形还是可以的;如下图

如果输入1250nA,波形的上升沿和下降沿就差了许多。如下图,

不知是否有合适的芯片,推荐一下

又找了一下发现OPA132基本上差不多,只是VOS电压有点大,最大达到2mV,仿真也可以,再找找....