Abstract: Disclosed are a differential amplifier circuit and a semiconductor memory device including the same, wherein the differential amplification circuit includes: a differential amplifier activated in response to an enable signal, capable of differentially amplifying input signals inputted through input terminals and outputting output signals; and an operation control section capable of sequentially applying signals having a voltage difference increasing in stepped fashion to the input terminals of the differential amplifier, measuring voltages of the output signals of the differential amplifier to detect an input offset, and adjusting an activation timing of the enable signal depending on a detected offset.