Energy-efficient DAC switching technique for single-ended SAR ADCs

摘要

A novel energy-efficient digital-to-analog converter (DAC) switching technique applicable to single-ended successive approximation register (SAR) analog-to-digital converter (ADC) is presented. The proposed DAC switching technique facilitates the ADC to digitize an input signal in the entire amplitude range of [0, V-ref] using only a single reference voltage of V-ref/2. The proposed DAC switching technique achieves 92.3% savings in switching energy as compared to the traditional DAC switching method in single-ended SAR ADCs. The performance of the proposed DAC switching technique and its comparison with previous reported works have been validated through behavioral simulations. (C) 2020 Elsevier GmbH. All rights reserved.