CALIBRATION CIRCUIT AND SEMICONDUCTOR DEVICE INCLUDING THE SAME

摘要

The present invention relates to a calibration circuit which comprises: a pad where toggling calibration data is inputted; a calibration reference voltage generation unit which is inputted with at least one of the calibration data, in order to generate calibration reference voltage from a median value of the calibration data; a comparison unit which compares the calibration reference voltage with reference voltage in order to output a comparison signal; and a reference voltage generation unit which generates the reference voltage corresponding to the comparison signal. The purpose of the present invention is to provide a semiconductor device which can perform calibration at the reference voltage by including the calibration circuit.