AMPLIFIER CIRCUIT, SIGNAL PROCESSOR CIRCUIT, AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE
    2.
    发明申请
    AMPLIFIER CIRCUIT, SIGNAL PROCESSOR CIRCUIT, AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE 有权
    放大器电路,信号处理器电路和半导体集成电路器件

    公开(公告)号:US20110241780A1

    公开(公告)日:2011-10-06

    申请号:US13075227

    申请日:2011-03-30

    IPC分类号: H03F3/45

    摘要: An amplifier circuit is provided to be switchable between a single end output configuration and a differential output configuration without increasing a circuit area. When first and fourth switches are turned off and a second switch is turned on, a load circuit functions as an active load on a differential pair and a first output terminal is internally disconnected. The amplifier circuit is provided with a single end output configuration and differentially amplifies input voltages inputted to input terminals and outputs an imbalanced signal from a second output terminal. When the first and fourth switches are turned on and the second switch is turned off, the load circuit functions as a load on the differential pair and the first output terminal is internally connected. The amplifier circuit is provided with a differential output configuration and differentially amplifies the input voltages inputted to the input terminals and outputs balanced signals from the output terminals.

    摘要翻译: 提供放大器电路以在单端输出配置和差分输出配置之间切换,而不增加电路面积。 当第一和第四开关断开并且第二开关导通时,负载电路用作差分对上的有效负载,并且第一输出端子在内部断开。 放大器电路具有单端输出配置,差分放大输入到输入端的输入电压,并从第二输出端输出不平衡信号。 当第一和第四开关接通并且第二开关断开时,负载电路用作差动对上的负载,并且第一输出端子被内部连接。 放大器电路具有差分输出配置,差分放大输入到输入端的输入电压,并从输出端输出平衡信号。