A Third-Order DT ΔΣ Modulator Using Noise-Shaped Bi-directional Single-Slope Quantizer Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/9w032441x

This is the author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by IEEE-Institute of Electrical and Electronics Engineers and can be found at:  http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4.

Descriptions

Attribute NameValues
Alternative Title
  • A Third-Order DT Delta Sigma Modulator Using Noise-Shaped Bi-Directional Single-Slope Quantizer
Creator
Abstract or Summary
  • This paper describes a new analog-to-digital converter based on the traditional dual-slope ADC operation. With a small modification to the discharging phase of the dual-slope ADC, first-order quantization noise shaping is achieved. This quantizer is used in a second-order loop filter and results in an overall third-order quantization noise shaping. To remove the need for any extra active element, this quantizer is merged with the active adder. In this fashion, the multi-bit flash ADC is removed and hence the loading of the active-adder is reduced to a single continuous-time comparator. Furthermore, to alleviate the speed of the counting-clock and the common-mode biasing accuracy requirements, a bi-directional discharging scheme is proposed. As a proof of concept, the second-order loop filter with the proposed quantizer is fabricated in a 0.18 μm CMOS technology and achieves over 78 dB SNDR with an oversampling ratio of 24 and 50 MHz sampling speed. The power consumption is 2.9 mW from a 1.5 V power supply.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Maghari, N.; Un-Ku Moon; , "A Third-Order DT Delta Sigma Modulator Using Noise-Shaped Bi-Directional Single-Slope Quantizer," Solid-State Circuits, IEEE Journal of , vol.46, no.12, pp.2882-2891, Dec. 2011 doi: 10.1109/JSSC.2011.2164964
Series
Keyword
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Submitted by Deanne Bruner (deanne.bruner@oregonstate.edu) on 2012-12-27T00:54:30ZNo. of bitstreams: 1MoonUn-KuEECSThirdOrderDTDelta.pdf: 2533610 bytes, checksum: 88d5bbdcad3e13028c229151e21933a3 (MD5)
  • description.provenance : Made available in DSpace on 2012-12-27T01:12:04Z (GMT). No. of bitstreams: 1MoonUn-KuEECSThirdOrderDTDelta.pdf: 2533610 bytes, checksum: 88d5bbdcad3e13028c229151e21933a3 (MD5) Previous issue date: 2011-12
  • description.provenance : Approved for entry into archive by Deanne Bruner(deanne.bruner@oregonstate.edu) on 2012-12-27T01:12:04Z (GMT) No. of bitstreams: 1MoonUn-KuEECSThirdOrderDTDelta.pdf: 2533610 bytes, checksum: 88d5bbdcad3e13028c229151e21933a3 (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items