TI工程师你好！
我目前打算使用OPA180运放构建差分放大器。如下图所示
如果我的放大倍数取0.4，那么取R1=R2=300K，RF=RG=120K，和R1=R2=30K，RF=RG=12K这两个选取哪一组比较好。或者有什么方法可以用来确定这四个电阻的大小。谢谢！
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