Compensation techniques for cascaded delta-sigma A/D converters and high-performance switched-capacitor circuits Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/5d86p3028

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • This thesis describes compensation techniques for cascaded delta-sigma A/D converters (ADCs) and high-performance switched-capacitor (SC) circuits. Various correlated-double-sampling (CDS) techniques are presented to reduce the effects of the nonidealities, such as clock feedthrough, charge injection, opamp input-referred noise and offset, and finite opamp gain, in SC circuits. A CDS technique for the compensation of opamp input-referred offset and clock-feedthrough effect is examined and improved to achieve continuous operation. Experimental results show that after the compensation, the SC integrator's output signal swing is greatly increased. The effects of the analog circuitry nonidealities in delta-sigma ADCs are also analyzed. The analysis shows that the nonidealities in cascaded delta-sigma ADCs cause noise leakage, which limits the overall performance of the cascaded modulators. In order to reduce the noise leakage, a novel adaptive compensation technique is proposed. To verify the effectiveness of the proposed compensation techniques, a prototype 2-0 cascaded modulator was designed. Its first stage, a second-order delta-sigma modulator with test signal input circuit, was designed and fabricated in 1.2 μm CMOS technology. The measurement results show that the noise leakage is reduced effectively by the compensation, and the performance of the cascaded delta-sigma modulator is greatly improved.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Erin Clark (ecscannerosu@gmail.com) on 2012-09-13T21:05:14Z No. of bitstreams: 1 SunTao1999.pdf: 5086644 bytes, checksum: 04daf6a724d69cda63e75f0209a5f126 (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-09-13T21:26:13Z (GMT) No. of bitstreams: 1 SunTao1999.pdf: 5086644 bytes, checksum: 04daf6a724d69cda63e75f0209a5f126 (MD5)
  • description.provenance : Made available in DSpace on 2012-09-13T21:27:16Z (GMT). No. of bitstreams: 1 SunTao1999.pdf: 5086644 bytes, checksum: 04daf6a724d69cda63e75f0209a5f126 (MD5) Previous issue date: 1998-09-21
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-09-13T21:27:16Z (GMT) No. of bitstreams: 1 SunTao1999.pdf: 5086644 bytes, checksum: 04daf6a724d69cda63e75f0209a5f126 (MD5)

Relationships

In Administrative Set:
Last modified: 08/15/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items