Output amplifier circuit and data driver of display device using the same

An output amplifier circuit comprising:

• a differential stage receiving an input signal at a non-inverting input thereof;
• a first output stage having first and second inputs electrically connected to first and second outputs of the differential stage, respectively;
• a second output stage having an output thereof electrically connected to a load to be driven;
• and
• a connection control circuit performing switching between:
• a first connection configuration in which the first and second outputs of the differential stage are electrically disconnected from first and second inputs of the second output stage, an output of the first output stage is electrically disconnected from an output of the second output stage, and the output of the first output stage is electrically connected to an inverting input of the differential stage;
• and
• a second connection configuration in which the first and second outputs of the differential stage are electrically connected to the first and second inputs of the second output stage, respectively, and at least the output of the second output stage out of the first and second output stages is electrically connected to the inverting input of the differential stage.