A Mized-Signal Calibration Technology for the Pipeline A/D Converter

摘要：

A mixed-signal calibration architecture and algorithm based upon 14bits 1.5b/s pipeline A/d converter is proposed1. The mixed-signal calibration algorithm consists of analog domain calibration and digital domain calibration. The analog-domain calibration algorithm adopts the level shifting technology to shift the input signal to lower voltage range. The digital output is reconstructed in the digital domain after analog-to-digital conversion. The digital-domain calibration algorithm adopts code-by-code compensation technique and constructs a linear equation by the method of awaiting determined coefficients. An error calibration look-up table is acquired through the digital-domain calibration. A behavioral-level model of 14bits 1.5b/s pipeline ADC with mixed-signal calibration algorithm is established. The results show that the proposed calibration architecture and algorithm can effectively calibrate errors. The INL and DNL are reduced within ±0.5LSB. The SNDR is improved from 30.8dB to 84.5dB,and the ENOB is arrived to 13.74bits.

关键词： the pipeline ADC mized-signal calibration analog-domain calibration digital-domain calibration

作者: LIANG Shang-Quan YIN Yong-Sheng DENG Hong-Hui WANG Xiao-Lei GAO Ming-Lun

作者单位: Institute of VLSI design,Hefei University of Technology,Hefei,China Institute of VLSI design,Hefei University of Technology and Institute of VLSI Design,Nanjing Univers

会议类型: 国际会议

会议名称: 2009 IEEE 8th International Conference on ASIC(第八届IEEE国际专用集成电路大会)

会议地点: 长沙

会议语种:英文

页码: 242-245

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）