This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
我选用OPA37，INA105组成仪用放大器，下面是电路图及测试数据，为什么测试与理论增益不同？而且我改变R9阻值，改变增益了，测试结果几乎不变，谢谢
INA105是差分运放，里面已经集成电阻了。外面可以去掉。按照Datasheet里的接法
OPA37 N1需要接成负反馈结构，如果使用单电源供电，需要给一个共模电压以正常放大。
