A ΔΣ modulator with 3-Bit, 37-level pre-detective dynamic quantization

Chien Hung Kuo, Kuan Hsun Wang

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

Abstract

In this paper, a high-resolution delta-sigma modulator with a pre-detective dynamic quantizer is proposed. A 37-level quantization can be achieved by using only a 3-bit quantizer in the proposed dynamic quantizer. In the proposed structure, a signal detector is added at the input of the presented modulator to pre-detect the magnitude of the sampled input and switch the dynamic quantizer to the corresponding quantization range. With the proposed technique, the quantization level can be greatly increased, and the number of comparators will hence be substantially reduced for a high-level quantization. The resulting resolution of delta-sigma modulators can thus be significantly promoted without consuming much power and area. The proposed delta-sigma modulator is implemented in a TSMC 0.18-μm 1P6M CMOS process. The signal-to-noise plus distortion ratio is 101.2 dB in a signal band of 25 kHz. The power consumption is 1.68 mW at a 1.8 V supply voltage.

Original languageEnglish
Title of host publication2012 10th IEEE International Conference on Semiconductor Electronics, ICSE 2012 - Proceedings
Pages574-577
Number of pages4
DOIs
Publication statusPublished - 2012 Dec 1
Event2012 10th IEEE International Conference on Semiconductor Electronics, ICSE 2012 - Kuala Lumpur, Malaysia
Duration: 2012 Sep 192012 Sep 21

Publication series

Name2012 10th IEEE International Conference on Semiconductor Electronics, ICSE 2012 - Proceedings

Other

Other2012 10th IEEE International Conference on Semiconductor Electronics, ICSE 2012
CountryMalaysia
CityKuala Lumpur
Period12/9/1912/9/21

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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    Kuo, C. H., & Wang, K. H. (2012). A ΔΣ modulator with 3-Bit, 37-level pre-detective dynamic quantization. In 2012 10th IEEE International Conference on Semiconductor Electronics, ICSE 2012 - Proceedings (pp. 574-577). [6417211] (2012 10th IEEE International Conference on Semiconductor Electronics, ICSE 2012 - Proceedings). https://doi.org/10.1109/SMElec.2012.6417211