Differential amplifier circuit
    6.
    发明授权
    Differential amplifier circuit 失效
    差分放大电路

    公开(公告)号:US4498054A

    公开(公告)日:1985-02-05

    申请号:US526822

    申请日:1983-08-26

    摘要: A differential amplifier circuit includes first and second differential amplifiers, with respective first input terminals thereof connected to each other and first and second current sources for supplying first and second drive currents to drive the first and second amplifiers respectively. The first and second drive currents are set such that their sum is constant. The differential amplifier circuit further includes first and second transistors with the bases thereof connected to second input terminals of the first and second amplifiers respectively and third and fourth current sources respectively connected to the current paths of the first and second transistors and supplying third and fourth drive currents equal to one half the respective second and first drive currents.

    摘要翻译: 差分放大器电路包括第一和第二差分放大器,其相应的第一输入端彼此连接,第一和第二电流源用于提供第一和第二驱动电流以分别驱动第一和第二放大器。 第一和第二驱动电流被设置为使得它们的和是恒定的。 差分放大器电路还包括第一和第二晶体管,其基极分别连接到第一和第二放大器的第二输入端,第三和第四电流源分别连接到第一和第二晶体管的电流路径,并提供第三和第四驱动 相当于相应的第二和第一驱动电流的一半的电流。