An amplifier circuit includes: a first inverter and a second inverter coupled in a cross-coupled form during an amplification operation and suitable for amplifying a voltage difference between a first line and a second line; a first isolation switch suitable for electrically connecting the first line and an output terminal of the first inverter to each other; a second isolation switch suitable for electrically connecting the second line and an output terminal of the second inverter to each other; and an equalizing switch suitable for electrically connecting the output terminal of the first inverter and the output terminal of the second inverter to each other, wherein before the amplification operation, a first offset compensation operation for turning on the second isolation switch and the equalizing switch and a second offset compensation operation for turning on the first isolation switch and the equalizing switch are performed.