| 摘要 |
PURPOSE:To simplify the circuit by utilizing an amplifier circuit to amplify an input signal so as to generate an offset voltage. CONSTITUTION:An input circuits turned on and an offset voltage generating section 7 is turned off in response to an output signal of a control circuit 12 in the case of the normal operation. Thus, an amplifier circuit 1 amplifies the input signal fed from the input circuit 4 and outputs the result to its output terminal. Moreover, in the case of the offset voltage generation, the offset voltage generating section 7 is activated and the input circuit 4 is inactivated in response to the output signal from the control circuit 12. Thus, the amplifier circuit 1 generates an output signal in response to the offset voltage generating section 7 to its output terminal. Thus, the circuit is simplified. |
