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我想用一个同相加法器实现-1.4v到0变为0到2.5v左右的输出，请问用什么运放比较好。呵呵，后面接跟随器再接ADC
有无输入信号频率特性的数据 ？此外后端ADC采样速率及其输入特性
假设是简单的直流电压信号则用一个简单的加法器即可，比如OPA2348，LMP2022等
转换时间为21us,输入信号时变化很缓慢的信号
