OPERATIONAL AMPLIFIER, DRIVE CIRCUIT, DRIVING METHOD OF LIQUID CRYSTAL DISPLAY

摘要

PROBLEM TO BE SOLVED: To secure drive current in 2H reverse drive for slew rate in rising and falling. SOLUTION: The operational amplifier is provided with: a first output transistor and a second output transistor connected in series between a first power supply and a second power supply; an output terminal connected to a node between the first output transistor and the second output transistor; a phase compensation element provided only in one side of between a gate of the first output transistor and the output terminal, and between a gate of the second output transistor and the output terminal; and a floating current source connected between the gate of the first output transistor and the gate of the second output transistor. COPYRIGHT: (C)2009,JPO&INPIT