Operational amplifier circuit and working method thereof

The invention discloses an operational amplifier circuit and a working method thereof, and the operational amplifier circuit comprises a first operational amplifier which is used for outputting an adjustment signal according to a first signal, the first operational amplifier comprises a chopper circuit, and the chopper circuit is used for adjusting the offset voltage and noise of the adjustment signal; and the second operational amplifier is used for adjusting the offset voltage and noise of the first signal according to the adjusting signal so as to output a second signal. A second operational amplifier is connected into an operational amplifier circuit, and the second operational amplifier is used for outputting an adjusting signal to a first operational amplifier so as to adjust offset voltage and noise of a first signal. 一种运算放大器电路及其工作方法，其中运算放大器电路包括：第一运算放大器，用于根据第一信号输出调节信号，所述第一运算放大器包括斩波电路，所述斩波电路用于对所述调节信号的失调电压以及噪声进行调节；第二运算放大器，用于根据所述调节信号，对所述第一信号的失调电压以及噪声进行调节，以输出第二信号。通过在运算放大器电路中接入第二运算放大器，所述第二运算放大器用于输出调节信号至所述第一