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OPA2690 做跨导放大光电二极管弱电流,在脉冲增多时,基线漂移

Other Parts Discussed in Thread: OPA2690

OPA2690 做跨导放大光电二极管弱电流, 下图的电路结构

发现在光电流频率增加后,其输出信号基线会向上漂移,如下图,原本基线在下面绿线上,光电流频率增加,基线上漂