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请求 寻找 适合大面积APD的跨阻放大器，此APD的结电容为55pF，请求推荐一款在合适的增益下频率能达到30MHZ的跨阻放大器。非常感谢。
您好，常用的跨阻放大器，OPA657，OPA843， OPA656等，您需要的反馈电阻大概多少？ 根据您的输入电流和输出电压的关系，计算下反馈阻值，从而计算下稳定在-3dB的带宽。
