公开(公告)号：US4641105A

公开(公告)日：1987-02-03

申请号：US784992

申请日：1985-10-07

申请人： Neil P. Albaugh ,  Gordon R. Kane

发明人： Neil P. Albaugh ,  Gordon R. Kane

IPC分类号： H03F3/45

CPC分类号： H03F3/45968 ,  H03F2200/261 ,  H03F2200/81

摘要： In a circuit including a differential amplifier, a switching device is coupled to the input terminals of the differential amplifier for periodically applying signals thereto. A second switching device is coupled to the output terminals of the differential amplifier and is synchronized with the switching device coupled to the input terminal. By providing an output signal that is constructed from signals amplified in an inverted and non-inverted mode of the differential amplifier, sources of noise and drift-related errors can be minimized.

摘要翻译： 在包括差分放大器的电路中，开关器件耦合到差分放大器的输入端，用于周期性地向其施加信号。 第二开关器件耦合到差分放大器的输出端，并与耦合到输入端的开关器件同步。 通过提供由差分放大器的反相和非反相模式放大的信号构成的输出信号，可以使噪声源和漂移相关误差最小化。