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高速ＡＤＣ通常需要非常严格地限制输入电压范围，这时就要使用输入箝位电路，输入箝位要求精密，温度漂移小，速度快，以满足高达５０ＭＨｚ的要求。下图给出的应用电路，可将正向电压箝位在１．２５Ｖ，１０ｍＶ，并可以在１ｎｓ内从箝位状态恢复，也可以很容易地改造成对负
High-speed ADCs typically require very strict limits on the input voltage. Input clamps are used at this time. The input clamps require precision, small temperature drift and high speed to meet the requirements of up to 50MHz. The application circuit shown in the following figure clamps the forward voltage at 1.25V, 10mV and can recover from a clamped state within 1ns and can easily be transformed into a negative