Patent ID: 9054723
Filing Date: 2015-06-09
Classification: H03M

Abstract:
1. An electronic system comprising: an A/D conversion unit; a D/A conversion unit; an AD conversion compensation unit; a DA conversion compensation unit; and a calibration unit, wherein during a calibration operation period, a calibration digital input signal is supplied to the DA conversion compensation unit, and either the calibration digital input signal or a DA conversion compensation calibration digital output signal generated from the DA conversion compensation unit is supplied to an input terminal of the D/A conversion unit, wherein during the calibration operation period, a calibration analog signal generated from an output terminal of the D/A conversion unit can be supplied to an input terminal of the A/D conversion unit, and a calibration digital output signal generated from an output terminal of the A/D conversion unit is supplied to an input terminal of the AD conversion compensation unit, wherein during the calibration operation period, either the calibration digital input signal or the DA conversion compensation calibration digital output signal is supplied to one input terminal of the calibration unit, and an AD conversion compensation calibration digital output signal generated from the AD conversion compensation unit is supplied to the other input terminal of the calibration unit, wherein during the calibration operation period, the calibration unit sets an operating characteristic of the AD conversion compensation unit and an operating characteristic of the DA conversion compensation unit in response to the signal supplied to the one input terminal of the calibration unit and the signal supplied to the other input terminal of the calibration unit, wherein the operating characteristic of the AD conversion compensation unit set during the calibration operation period compensates for non-linearity of AD conversion of the A/D conversion unit, and wherein the operating characteristic of the DA conversion compensation unit set during the calibration operation period compensates for non-linearity of DA conversion of the D/A conversion unit.