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OPA187: 在压控电流源中仿真数据错误

Part Number: OPA187
Other Parts Discussed in Thread: OPA196, , OPA191

最近需要用到一个压控电流源,最先用OPA196进行设计,用PSPICE FOR TI仿真结果正常。为了提高精度把运放换成失调电压和温漂性能更优秀的OPA187,仿真了一下,输出电流明显不对。请问这是什么原因?是OPA187的仿真模型有问题 ,还是这个运放不适合这个电路?