Operational amplifier
AssigneeHimax Technologies Limited
InventorsChun-Yu Liu, Ping-Liang Chen
Life of this patent
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Abstract
An operational amplifier includes a first output transistor and a second output transistor connected in series between two power nodes, the second output transistor having a semiconductor type opposite to the first output transistor, the first output transistor and the second output transistor being electrically coupled at an output node, and gates of the first output transistor and the second output transistor being connected to a first drive node and a second drive node respectively; and a decoupling capacitor circuit electrically connected between the first drive node and the second drive node.
Claims11
An operational amplifier, comprising:
- a first output transistor and a second output transistor connected in series between two power nodes, the second output transistor having a semiconductor type opposite to the first output transistor, the first output transistor and the second output transistor being electrically coupled at an output node, and gates of the first output transistor and the second output transistor being connected to a first drive node and a second drive node respectively;
- and
- a decoupling capacitor circuit electrically connected between the first drive node and the second drive node;
- wherein the decoupling capacitor circuit comprises a first decoupling capacitor switchably connected between the first drive node and the second drive node, and the first decoupling capacitor is switchably connected between the first drive node and the output node.
An operational amplifier, comprising:
- a first output transistor and a second output transistor connected in series between two power nodes, the second output transistor having a semiconductor type opposite to the first output transistor, the first output transistor and the second output transistor being electrically coupled at an output node, and gates of the first output transistor and the second output transistor being connected to a first drive node and a second drive node respectively;
- a first Miller capacitor electrically connected between a first connect node and the output node;
- a second Miller capacitor electrically connected between a second connect node and the output node;
- and
- a decoupling capacitor circuit electrically connected between the first connect node and the second connect node;
- wherein the decoupling capacitor circuit comprises a first decoupling capacitor switchably connected between the first connect node and the second connect node;
- and further wherein the first decoupling capacitor is switchably connected between the first connect node and the output node.
Dependencies are inferred from the claim text.