AD8641/AD8642/AD8643均为低功耗、精密JFET输入放大器，具有极低的输入偏置电流和轨到轨输出特性。此外还具有近似轨到轨输入与轨到轨输出摆幅能力，因而设计人员可以在单电源系统中缓冲CMOS DAC、ASIC及其它宽输出摆幅器件。当容性负载大于500 pF时，输出仍能保持稳定。

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Low Power RailtoRail Output Precision JFET Amplifiers AD8641AD8642AD8643 Data Sheet FEATURES Low supply current 250 A max Very low input bias current 1 pA max Low offset voltage 750 V max Singlesupply operation 5 V to 26 V Dualsupply operation 25 V to 13 V Railtorail output Unitygain stable No phase reversal SC70 package APPLICATIONS Linebatterypowered instruments Photodiode amplifiers Precision current sensing Medical instrumentation Industrial controls Precision filters......