题目/Title：A Simple Histogram-based Capacitor Mismatch Calibration in SAR ADCs

作者/Author：
                        Xiao Wang,Fule Li,Zhihua Wang

期刊/Journal：IEEE Transactions on Circuits and Systems II: Express Briefs

年份/Issue Date：2020Apr.

卷（期）及页码/Volume（No.）&pages：Vol.PP, No.99, pp. 1 - 1

摘要/Abstract：
This paper presents a simple capacitor mismatch calibration in SAR ADCs, which is in foreground and on chip. Capacitor errors are extracted based on output histogram under a triangular input signal generated on chip and compensated by tuning capacitors with a calibration DAC. A novel one-by-one strategy can simplify the extraction by isolating the individual contribution of each capacitor error. The proposed calibration needs no computation and is validated with a 10-bit 100MS/s SAR ADC. Size of the ADC core including calibration system is only 90渭m脳97渭m. Measurement results show effectiveness of the proposed calibration.