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University of Cincinnati

1. Alla, Ravi Chandar. Design and Implementation of an analog to digital conversion mechanism for an in-situ monitoring microelectrode SOC.

Degree: MS, Engineering : Computer Engineering, 2008, University of Cincinnati

A lot of importance has been given to the problem of addressing the direct and indirect causes of the environmental pollution. Developing methods to effectively monitor and control pollution in the environment has been a major research area in recent years. Many sites containing toxic chemical spills and other waste materials from industries require constant and long term monitoring to reduce the detrimental impacts on public health.In-situ monitoring has gained a lot of importance and has become the most cost-effective and reliable way of monitoring the concentration of various toxicants. A system consisting of the microelectrode sensors with data-processing circuitry for analyzing the sample data at the remote user is essential for in-situ monitoring. This thesis work explains the development of an efficient analog to digital conversion mechanism for a second generation micro electrode SOC. This thesis work presents an efficient approach of the design of ADC for getting high resolution, low power and to consume less silicon area. The design has been fabricated in AMI 0.5 ยต m process at MOSIS fabrication facility. Results of the post silicon testing of the system and the ADC have been reported and the system is analyzed for performance. The results show that the analog to digital conversion mechanism designed can be used in the microelectrode SOC for in-situ environmental monitoring from 0.6 to 4.5 V providing 16 bit resolution. Advisors/Committee Members: Beyette, Fred (Advisor).

Subjects/Keywords: Engineering; ADC; Comparator; Current Mirror; Capacitor; voltage; Ramp generator; input voltage

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APA (6th Edition):

Alla, R. C. (2008). Design and Implementation of an analog to digital conversion mechanism for an in-situ monitoring microelectrode SOC. (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1227042824

Chicago Manual of Style (16th Edition):

Alla, Ravi Chandar. “Design and Implementation of an analog to digital conversion mechanism for an in-situ monitoring microelectrode SOC.” 2008. Masters Thesis, University of Cincinnati. Accessed September 27, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1227042824.

MLA Handbook (7th Edition):

Alla, Ravi Chandar. “Design and Implementation of an analog to digital conversion mechanism for an in-situ monitoring microelectrode SOC.” 2008. Web. 27 Sep 2020.

Vancouver:

Alla RC. Design and Implementation of an analog to digital conversion mechanism for an in-situ monitoring microelectrode SOC. [Internet] [Masters thesis]. University of Cincinnati; 2008. [cited 2020 Sep 27]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1227042824.

Council of Science Editors:

Alla RC. Design and Implementation of an analog to digital conversion mechanism for an in-situ monitoring microelectrode SOC. [Masters Thesis]. University of Cincinnati; 2008. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1227042824


Delft University of Technology

2. Kamath, U.R. (author). Design of high-resolution photodiode readout circuitry for a bio-implantable continuous glucose sensing chip.

Degree: 2012, Delft University of Technology

Glucose sensors are useful for monitoring and control of blood-sugar concentration for diabetic patients. There are many challenges in their wide-spread use and effectiveness in control of the disease. This work is a step towards achieving in vivo continuous long-term glucose monitoring using the optical near-infrared based glucose sensing principle. The thesis investigates and arrives at an architecture for the readout circuitry of such a sensor system. The goal is that the realized CMOS chip together with the optical sensing devices realized in Silicon-on-Insulator technology will form a single-implantable solution. The advantage is the long-term monitoring due to non-usage of chemical reagents. The thesis work addresses the read-out circuit requirements for a photodiode as part of such a sensor. The design of a high-resolution current-input sigma-delta ADC is discussed which targets to achieve 16-bit resolution for a photo-diode signal in the range of 100nA-10?A. Various optimizations for specifications such as noise, accuracy and energy-efficiency both at circuit and system level are addressed. The chip has been realized in a TSMC 0.18?m process. The initial measurements show the functionality of the ADC and its performance using the test set-up developed. A proof of concept of the optical-electrical interface with a photodiode shows the application of the circuit.

Microelectronics

Electronic Instrumentation Laboratory

Electrical Engineering, Mathematics and Computer Science

Advisors/Committee Members: Pertijs, M.A.P. (mentor), San Segundo Bello, D. (mentor).

Subjects/Keywords: glucose sensor; incremental Sigma-Delta; current input ADC; dynamic reference; wide-dynamic range; sensor adaptable ADC

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Kamath, U. R. (. (2012). Design of high-resolution photodiode readout circuitry for a bio-implantable continuous glucose sensing chip. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:ea9d2e1c-5b03-44e9-b916-587fd737313f

Chicago Manual of Style (16th Edition):

Kamath, U R (author). “Design of high-resolution photodiode readout circuitry for a bio-implantable continuous glucose sensing chip.” 2012. Masters Thesis, Delft University of Technology. Accessed September 27, 2020. http://resolver.tudelft.nl/uuid:ea9d2e1c-5b03-44e9-b916-587fd737313f.

MLA Handbook (7th Edition):

Kamath, U R (author). “Design of high-resolution photodiode readout circuitry for a bio-implantable continuous glucose sensing chip.” 2012. Web. 27 Sep 2020.

Vancouver:

Kamath UR(. Design of high-resolution photodiode readout circuitry for a bio-implantable continuous glucose sensing chip. [Internet] [Masters thesis]. Delft University of Technology; 2012. [cited 2020 Sep 27]. Available from: http://resolver.tudelft.nl/uuid:ea9d2e1c-5b03-44e9-b916-587fd737313f.

Council of Science Editors:

Kamath UR(. Design of high-resolution photodiode readout circuitry for a bio-implantable continuous glucose sensing chip. [Masters Thesis]. Delft University of Technology; 2012. Available from: http://resolver.tudelft.nl/uuid:ea9d2e1c-5b03-44e9-b916-587fd737313f

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