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直流电压范围10uV—1000uV ,放大1000倍。请问前级放大电路和中间级放大电路使用哪款运放比较合适？
亲；OPA2189就是不错的IC，两级串联；放大倍数分别设为20、50即可实现1000倍信号放大。
这种直流低电压信号放大，考虑运放时需要考虑运放的低噪声，低输入失调电压，或者选择仪表运放也是不错的选择。
