Print Email Facebook Twitter Multiplexed thermal-diffusivity-based temperature sensors Title Multiplexed thermal-diffusivity-based temperature sensors Author Tansel, Öykü (TU Delft Electrical Engineering, Mathematics and Computer Science) Contributor Makinwa, K.A.A. (mentor) Muratore, D.G. (graduation committee) Degree granting institution Delft University of Technology Programme Electrical Engineering Date 2022-12-22 Abstract Due to the precise lithography and highly pure silicon used in IC technology, thermal-diffusivity (TD) temperature sensors can achieve high accuracy without the need for trimming. TD sensors employ electrothermal filters (ETFs) to measure the thermal diffusivity of silicon, i.e. the rate at which heat diffuses through silicon, which is a well-defined function of temperature. This thesis presents two approaches to improve the accuracy and resolution of TD sensors. The first approach investigates the effect of variations in ETF geometry on sensor resolution and proposes a multiplexing scheme to utilize a single readout circuit for reading out multiple ETFs. The second approach aims to investigate the effect of improvements in CMOS technology on sensor accuracy by scaling two ETFs to the 65nm process from the 180nm process. A first-order phase-domain delta-sigma modulator is designed for the readout of the ETFs in the 65nm process, and the previously designed multiplexing scheme is used for cost and time-efficient tape-out. Based on the estimated lithographic error of the 65nm process, the two ETFs are expected to achieve untrimmed inaccuracies of 0.18℃(3𝜎) and 0.36℃(3𝜎), respectively. Subject Electrothermal FiltersTemperature SensorThermal diffusivity To reference this document use: http://resolver.tudelft.nl/uuid:aa2c4b1d-7829-4030-8ce0-d2605240fd27 Part of collection Student theses Document type master thesis Rights © 2022 Öykü Tansel Files PDF MSc_Thesis_Oyku_Tansel_5220955.pdf 4.13 MB Close viewer /islandora/object/uuid:aa2c4b1d-7829-4030-8ce0-d2605240fd27/datastream/OBJ/view