A 1.5-bit/stage pipeline ADC with FFT-based calibration method

Ming Chun Liang, Cheng Han Hsieh, Shuenn-Yuh Lee

研究成果: Conference contribution

4 引文 斯高帕斯(Scopus)

摘要

A fast Fourier transform-based (FFT-based) foreground digital calibration method for multistage pipeline analog-to-digital converter (ADC) is proposed in this paper. The calibration method can overcome the capacitor mismatch and finite gain of the operational amplifier (OPAMP). Given that the capacitor mismatch and finite OPAMP gain cause the radix of all the stages of multistage pipeline ADC to become unequal to 2n, the FFT processor can be adopted to evaluate the real radixes of all the stages and generate new digital output to compensate the error caused by these nonideal effects. Moreover, because capacitor mismatch and the finite gain of OPAMP can be compensated, low-gain OPAMP can be used in high-performance ADC to reduce the power dissipation, and the small capacitor can be adopted to save the area. An example of a 10-bit 1.5-bit/stage pipelined ADC with only an 8-bit circuit performance is implemented in 0.18 μm TSMC CMOS process. The circuit measurement result reveals that the signal-to-noise-and-distortion ratio (SNDR) of 51.03 dB with 11-dB improvement after calibration can be achieved at the sample rate of 1 MHz.

原文English
主出版物標題2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013
頁面2042-2045
頁數4
DOIs
出版狀態Published - 2013 九月 9
事件2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013 - Beijing, China
持續時間: 2013 五月 192013 五月 23

出版系列

名字Proceedings - IEEE International Symposium on Circuits and Systems
ISSN(列印)0271-4310

Other

Other2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013
國家China
城市Beijing
期間13-05-1913-05-23

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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  • 引用此

    Liang, M. C., Hsieh, C. H., & Lee, S-Y. (2013). A 1.5-bit/stage pipeline ADC with FFT-based calibration method. 於 2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013 (頁 2042-2045). [6572273] (Proceedings - IEEE International Symposium on Circuits and Systems). https://doi.org/10.1109/ISCAS.2013.6572273