半导体学报（英文版）2012，Vol.33Issue(12)：100-105,6.DOI:10.1088/1674-4926/33/12/125009
A 72-dB-SNDR rail-to-rail successive approximation ADC using mismatch calibration techniques
A 72-dB-SNDR rail-to-rail successive approximation ADC using mismatch calibration techniques
Liu Yan 1Hua Siliang 1Wang Donghui 1Hou Chaohuan1
作者信息
- 1. Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China
- 折叠
摘要
Abstract
When the voltage of an analog input signal is equal to the supply voltage,it is difficult for a conventional successive approximation ADC to correctly convert the analog signal into digital signal.This paper introduces an improved successive approximation ADC,which can convert the rail-to-rail input range and reduce sampling time through a track-and-hold circuit.Comparator offset cancellation and capacitor self-calibration techniques are used in this ADC.Measurement results show that the peak SNDR of this ADC reaches 72 dB and the signal effective bandwidth is up to 1.25 MHz.It consumes 1 mW in the test,and the figure of merit is 123 fJ/conversion-step.关键词
rail-to-rail/ mismatch calibration/ THA/ successive approximation ADCKey words
rail-to-rail/ mismatch calibration/ THA/ successive approximation ADC引用本文复制引用
Liu Yan,Hua Siliang,Wang Donghui,Hou Chaohuan..A 72-dB-SNDR rail-to-rail successive approximation ADC using mismatch calibration techniques[J].半导体学报（英文版）,2012,33(12):100-105,6.
