运算放大器的单电源供电电路.pdf

® ® SINGLE-SUPPLY OPERATION OF OPERATIONAL AMPLIFIERS SINGLE-SUPPLY OPERATION OF OPERATIONAL AMPLIFIERS 运算放大器的单电源供电 One of the most common applications questions on opera- output to swing within 2V of the power supply, making it tional amplifiers concerns operation from a single supply possible to output –13V to +13V with ±15V supplies. 单电源电压供电是运算放大器最常见的应用问题之 图 展示了同样的单位增益跟随器，采用 单电 1b 30 V One of the most common applications questions on opera- output to swing within 2V of the power supply, making it voltage. “Can the model OPAxyz be operated from a single Figure 1b shows the same unity-gain follower operated from 一。当问及 “型号为O PAxy z ， 能否采用单电源供 源支持供电。运算放大器的两个电源接线端之间的总 tional amplifiers concerns operation from a single supply possible to output –13V to +13V with ±15V supplies. supply?” The answer is almost always yes. Operation of op a single 30V power supply. The op amp still has a total of voltage. “Can the model OPAxyz be operated from a single 电？”，答案通常是肯定的。在不启用负相电源电压 电压仍为 ，但此时采用了单正相电源。从另一角 amps from single supply voltages is useful when negative 30 V Figure 1b shows the same unity-gain follower operated from 30V across the power supply terminals, but in this case it supply?” The answer is almost always yes. Operati