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用OPA657设计跨阻放大器，实际测带宽只有3M，怎么提升带宽呢
您好，
下面链接是光电二极管放大电路参考设计，里面有设计过程，电路的带宽与反馈电阻RF、反馈电容CF和输入分布电容CIN有关，具体请查看里面的设计过程：
https://www.ti.com.cn/cn/lit/ug/tidu535/tidu535.pdf
