Show simple item record

dc.creatorBecker-Gomez, Adrianaen_US
dc.descriptionDue to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to, referencing the URI of the item.en_US
dc.descriptionIncludes bibliographical references (leaves 100-102).en_US
dc.descriptionIssued also on microfiche from Lange Micrographics.en_US
dc.description.abstractThe purpose of this thesis is to introduce the use of interface-trap charge pumping devices (ITCP) in an analog application based in ultra-low-current transconductors. This application naturally exploits the continuous nature of the current generated by the interface-trap charge pump. An interface-trap charge-pump has been used as an ultra low current source for biasing an operational transconductance amplifier in both single-ended and fully differential configurations. Source degeneration techniques have been applied to reduce the total harmonic distortion. The history, physics and a primary model of ITCP are presented as background material. The analysis has been extended for the design of analog circuits based in ultra-low frequency OTA filters. A novel technique based on ITCP for a floating current source is presented as an alternative solution for fully differential structures. The performance of the proposed techniques and circuit implementations has been characterized. The proposed filters have been fabricated in two different technologies 1.2[]m and 0.5[]m n-well CMOS process. The fabricated filters have programmable frequencies of operation in the range of 0.1 to 100 Hz. Experimental results of the test chips were very satisfactory and are in agreement with the theoretical basis.en_US
dc.publisherTexas A&M Universityen_US
dc.rightsThis thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use.en_US
dc.subjectelectrical engineering.en_US
dc.subjectMajor electrical engineering.en_US
dc.titleCharge pumping techniques in ultra-low current transconductor designen_US
dc.typeThesisen_US engineeringen_US
dc.format.digitalOriginreformatted digitalen_US

Files in this item


This item appears in the following Collection(s)

Show simple item record

This item and its contents are restricted. If this is your thesis or dissertation, you can make it open-access. This will allow all visitors to view the contents of the thesis.

Request Open Access