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因为输入波形的零漂很严重，希望能找一款运放，可以从外部设置基准电压。供电电源为3.3V，带宽范围25Khz以上，多谢给位！
你可以先看下这个帖子：
http://www.deyisupport.com/question_answer/analog/amplifiers/f/52/t/22640.aspx
PGA112,PGA113,PGA308.
