半导体学报（英文版）2013，Vol.34Issue(1)：118-128,11.DOI:10.1088/1674-4926/34/1/015010
An 11-bit ENOB, accuracy-programmable, and non-calibrating time-mode SAR ADC
An 11-bit ENOB, accuracy-programmable, and non-calibrating time-mode SAR ADC
摘要
Abstract
A 10 or 12 bit programmable successive approximation register (SAR) ADC incorporating improved time-domain comparator for bridge stress monitoring systems is presented.Techniques for improving the accuracy of time-domain comparator are presented.The application of these approaches is illustrated using results from an experimental 10 or 12 bit programmable SAR ADC.Prototyped in a 0.18-μm,6M1P CMOS process,the ADC,at 12 bit,100 kS/s,achieves a Nyquist signal-to-noise-plus-distortion ratio (SNDR) of 68 dB (11 ENOB),a spurious free dynamic range (SFDR) of 77.48 dB,while dissipating 558 μW from a 1.8-V supply.Its differential nonlinearity (DNL) and integral nonlinearity (INL) are 0.2/-0.74 LSB and + 1.27/-0.97 LSB,respectively.关键词
analog-to-digital converter (ADC)/non-calibrating/successive approximation register (SAR)Key words
analog-to-digital converter (ADC)/non-calibrating/successive approximation register (SAR)引用本文复制引用
Fan Hua,Han Xue,Wei Qi,Yang Huazhong..An 11-bit ENOB, accuracy-programmable, and non-calibrating time-mode SAR ADC[J].半导体学报（英文版）,2013,34(1):118-128,11.基金项目
Project supported by the PhD Programs Foundation of the Ministry of Education of China (No.20111011315) and the National Science and Technology Important Project of China (No.2010ZX03006-003-01). （No.20111011315）
