Work

Exponential-incremental quantization-based calibration for capacitor mismatch in high-precision SAR ADCs

Year: 2025

Type: article

Abstract: This brief proposes a foreground calibration method for high-precision SAR ADCs . The proposed calibration method is based on the principle of exponential incremental ADCs , which broadens the error detection range of the self-calibration method and effectively improves the calibration effect without modifying the CDAC or significantly increasing circuit complexity. The effectiveness of the proposed calibration method is validated in an 18-bit SAR ADC behavioral model in MATLAB, demonstrating SNDR/SFDR improvements of 30.41 dB and 43.09 dB, respectively, for an 18-bit SAR ADC.

Source: Microelectronics Journal

DOI: 10.1016/j.mejo.2025.106696

Authors: Zheyu Zhang, Yuzhou Xiong, Yanbo Zhang, Shubin Liu, Zhangming Zhu

Language: English

Topic: Analog and Mixed-Signal Circuit Design

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,390

Funders: National Natural Science Foundation of China, Key Technologies Research and Development Program, National Key Research and Development Program of China, Fundamental Research Funds for the Central Universities

Awards: G2981919026, G3866985079, G4765864460, G6883874058