公开(公告)号：EP0460564A1

公开(公告)日：1991-12-11

申请号：EP91109013.2

申请日：1991-06-03

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

发明人： Hirakata, Noriyuki, c/o Yokohama Works Sumitomo

IPC分类号： H03F3/45

CPC分类号： H03F3/45968 ,  H03F3/45775 ,  H03F2200/81

摘要： A differential amplifier circuit suitable for amplifying a faint signal such as an output of various sensors. The differential amplifier (21) circuit includes switching units (12,13) which are provided at input and output side of a differential amplifier (11) to switch the polarities of an input signal and an output signal of the differential amplifier (11) so as to remove an Offset voltage. The differential amplifier circuit (21) always operates as an ideal amplifier.

摘要翻译： 各种传感器。 差分放大器（21）电路包括设置在差分放大器（11）的输入和输出侧的开关单元（12,13），用于将输入信号的极性和差分放大器（11）的输出信号切换为 以消除偏移电压。 差分放大器电路（21）总是作为理想放大器工作。