| 摘要 |
A circuit start method, a control circuit and a voltage reference circuit. The control circuit comprises an operational amplifier circuit (10) and a comparison control circuit (20), wherein the operational amplifier circuit (10) is configured to establish an input reference voltage (VREF_INT) and an output reference voltage (VREF_OUT) through an operational amplifier (EA) and an external capacitor (C); and the comparison control circuit (20) is configured to execute a turnover operation when the input reference voltage (VREF_INT) is consistent with the output reference voltage (VREF_OUT), and output an enable signal (VREF_OK) to the operational amplifier (EA) so as to close the operational amplifier (EA). |
