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集成运放在一正一负两个对称电源下工作的线路的直流偏置电路比较简单,只要静态时两个输入端平衡即可。集成运放在单电源下工作的线路比较复杂,要求静态时集成运放的输出脚的电压设计为电源电压的一半。设计集成运放在单电源下工作的线路与设计集成运放在一正一负两个对称电源下工作的线路的不同实际上就是同相端的偏置电路的设计的不同。
Integrated op amp in a positive one negative two symmetrical power line DC bias circuit is relatively simple, as long as the static balance of the two inputs can be. Integrated operational amplifier circuit in a single power supply is more complex, requiring static op amp output pin voltage is designed to half the supply voltage. Design of integrated op amps operating in a single power supply line and design of the integrated op amp in a positive and negative two symmetrical power supply line is actually different at the same phase of the bias circuit design.