Patent ID: 9112453
Filing Date: 2015-08-18
Classification: H03F

Abstract:
1. An operational amplifier circuit, comprising: a main circuit, having an output terminal; a compensation capacitor, having a first end connected to an internal node of the main circuit, and a second end connected to the output terminal of the main circuit; a power circuit, providing a current or a voltage as predetermined; and a set of switches, connecting the power circuit to the compensation capacitor, wherein when the main circuit is not in an output state, the set of switches is switched to allow the power circuit to provide the current or the voltage to the compensation capacitor, and the compensation capacitor is not sensing a voltage at the output terminal from the main circuit, wherein when the main circuit is in the output state, the set of switches is switched to disconnect the power circuit from the compensation capacitor and allow the main circuit to return to an output circuit state and operate normally.