A/D CONVERTER BACKGROUND CALIBRATION

摘要

An A/D converter system includes a regular A/D converter (10) with calibration means. Included is also a lower performance, as compared to the regular A/D converter, auxiliary A/D converter (20). Means (22, 24) are provided for temporarily switching, at a switching rate that is lower than the sampling rate of regular A/D converter (10), A/D conversion from the regular A/D converter (10) to the auxiliary A/D converter (20) during short time intervals used for calibration of the regular A/D converter (10).