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You searched for +publisher:"Delft University of Technology" +contributor:("San Segundo Bello, D."). Showing records 1 – 2 of 2 total matches.

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Delft University of Technology

1. 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 25, 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. 25 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 25]. 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


Delft University of Technology

2. Ma, C. (author). Pixel ADC Design for Hybrid CMOS Image Sensors.

Degree: 2010, Delft University of Technology

This thesis presents the design of a pixel level analog-to-digital converter (ADC) circuit for hybrid CMOS image sensors. There are several methods to increase the dynamic range of the sensor through the readout algorithm. The multiple sampling method can increase the dynamic range (DR) without a loss of signal-to-noise ratio (SNR). The idea is to acquire several images during one frame. Based on the multiple sampling method, the method described in this thesis uses the special feature of the pinned photodiode to select the charge transfer time locally to change the total integration time in one frame based on the input light intensity. The comparator is reused during the different conversion phases to save power and area. Only one comparison is needed after each charge transfer, so compared with traditional multiple sampling method for DR enhancement this method can save a lot of power. In-pixel memory is used to store the converted data, and these data are read by column wise current sense amplifiers. The simulation results show that the charge transfer of the pinned photo diode is controlled locally and for a 7-bit dynamic range enhancement the additional power is only 2.2% compared with no DR enhancement.

Microelectronics

Microelectronics & Computer Engineering

Electrical Engineering, Mathematics and Computer Science

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

Subjects/Keywords: Pixel ADC; smart pixel; dynamic range enhancement; multiple sampling

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

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

APA (6th Edition):

Ma, C. (. (2010). Pixel ADC Design for Hybrid CMOS Image Sensors. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:43b9dfc2-0ea1-4186-9797-742141bcc56b

Chicago Manual of Style (16th Edition):

Ma, C (author). “Pixel ADC Design for Hybrid CMOS Image Sensors.” 2010. Masters Thesis, Delft University of Technology. Accessed September 25, 2020. http://resolver.tudelft.nl/uuid:43b9dfc2-0ea1-4186-9797-742141bcc56b.

MLA Handbook (7th Edition):

Ma, C (author). “Pixel ADC Design for Hybrid CMOS Image Sensors.” 2010. Web. 25 Sep 2020.

Vancouver:

Ma C(. Pixel ADC Design for Hybrid CMOS Image Sensors. [Internet] [Masters thesis]. Delft University of Technology; 2010. [cited 2020 Sep 25]. Available from: http://resolver.tudelft.nl/uuid:43b9dfc2-0ea1-4186-9797-742141bcc56b.

Council of Science Editors:

Ma C(. Pixel ADC Design for Hybrid CMOS Image Sensors. [Masters Thesis]. Delft University of Technology; 2010. Available from: http://resolver.tudelft.nl/uuid:43b9dfc2-0ea1-4186-9797-742141bcc56b

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