A 0.4V 53dB SNDR 250 MS/s time-based CT ΔΣ analog to digital converter

Hung Kai Chen, Wei-Zen Chen, Zhiyuan Ren

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents the design of an ultra-low voltage (ULV), time-based, continuous-time ΔΣ analog-to-digital data converter. By replacing the 2nd stage integrator with frequency-calibrated voltage bootstrapping VCO, it circumvents ULV design challenges while achieving a signal bandwidth up to 2 MHz. Back-gate adder, voltage amplifier, and bootstrapping logic cells are also proposed to enable 250 MHz sampling rate operation. The measured peak SNDR is 53 dB under a supply voltage of 0.4 V. The whole ADC consumes 526 μW. Fabricated in a 90 nm CMOS process, the core area is 0.08 mm2.

Original languageEnglish
Title of host publicationProceedings - 2015 IEEE 11th International Conference on ASIC, ASICON 2015
EditorsJunyan Ren, Ting-Ao Tang, Fan Ye, Huihua Yu
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479984831
DOIs
StatePublished - 21 Jul 2016
Event11th IEEE International Conference on Advanced Semiconductor Integrated Circuits (ASIC), ASICON 2015 - Chengdu, China
Duration: 3 Nov 20156 Nov 2015

Publication series

NameProceedings - 2015 IEEE 11th International Conference on ASIC, ASICON 2015

Conference

Conference11th IEEE International Conference on Advanced Semiconductor Integrated Circuits (ASIC), ASICON 2015
CountryChina
CityChengdu
Period3/11/156/11/15

Keywords

  • CT-ΔΣ ADC
  • ULP
  • ULV

Fingerprint Dive into the research topics of 'A 0.4V 53dB SNDR 250 MS/s time-based CT ΔΣ analog to digital converter'. Together they form a unique fingerprint.

  • Cite this

    Chen, H. K., Chen, W-Z., & Ren, Z. (2016). A 0.4V 53dB SNDR 250 MS/s time-based CT ΔΣ analog to digital converter. In J. Ren, T-A. Tang, F. Ye, & H. Yu (Eds.), Proceedings - 2015 IEEE 11th International Conference on ASIC, ASICON 2015 [7517109] (Proceedings - 2015 IEEE 11th International Conference on ASIC, ASICON 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ASICON.2015.7517109