Summing amplifier with 4 inputs and 1 output. 具有4个输入和1个输出的加法放大器。
The difference amplifier is the complement of the summing amplifier and allows the subtraction of two voltages or, as a special case, the cancellation of a signal common to the two inputs. 差分放大器是对求和电路的发展,这种电路可以减小甚至去处两个输入信号中的共模成分。