Patent ID: 11955983
Assignee: NORDIC SEMICONDUCTOR ASA
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. The analog to digital conversion circuitry of claim 1, wherein the SAR-ADC comprises a capacitor digital-to-analog converter (CDAC), and wherein the analog to digital conversion circuitry comprises calibration circuitry for calibrating each capacitor, or each differential capacitor pair, of a plurality of capacitors or capacitor pairs of the CDAC, wherein the calibration circuitry is arranged, when calibrating a capacitor or capacitor pair, to switch capacitors of the CDAC so as to generate a residual mismatch voltage that is proportional to a mismatch between the capacitor or capacitor pair being calibrated and one or more further capacitors or capacitor pairs of the CDAC.