Print Email Facebook Twitter A Compact Resistor-Based Temperature Sensor Title A Compact Resistor-Based Temperature Sensor Author Preda, Valeria (TU Delft Electrical Engineering, Mathematics and Computer Science; TU Delft Electronic Instrumentation) Contributor Makinwa, K.A.A. (mentor) Pertijs, M.A.P. (graduation committee) Sebastiano, F. (graduation committee) Degree granting institution Delft University of Technology Programme Electrical Engineering | Microelectronics Date 2019-06-21 Abstract Smart temperature sensors can be used for the temperature compensation of micro-electromechanical (MEMS) frequency references. From the different types of CMOS temperature sensors, resistor-based sensors are currently the most energy-efficient. However, compared with bipolar transistor (BJT)-based temperature sensors, resistors suffer from higher nonlinearity and spread of their temperature dependencies which require multi-point calibration to achieve similar accuracy. Given that a new design direction should attempt to combine the best features of both types of sensors, the target of this work is to develop a resistor-based temperature sensor that should be more energy-efficient than BJT-based sensors, but with a competitive area.This thesis investigates circuit techniques to obtain a design of a compact resistor-based temperature sensor (area < 0.1mm2) which is energy-efficient,while achieving high resolution ( sub - mK) and high accuracy (inaccuracy< 0.1°C).To achieve the target specifications, a frequency-locked-loop (FLL) is implemented around the sensing element. Design directions were presented,consisting of a continuous-time readout and a discrete-time readout together with their limitations and performance. Based on the simulation results, it can be stated that the combination between the FLL readout and the Wien-bridge sensing element enables the design of a compact sensor which achieves the target specifications. Subject smart temperature sensorresistor-based temperature sensorfrequency-locked-loopFLLcompactenergy efficientWien-bridge To reference this document use: http://resolver.tudelft.nl/uuid:dc60ae7c-e893-4665-83c4-dd2330a2a803 Part of collection Student theses Document type master thesis Rights © 2019 Valeria Preda Files PDF A_Compact_Resistor_Based_ ... Sensor.pdf 3.5 MB Close viewer /islandora/object/uuid:dc60ae7c-e893-4665-83c4-dd2330a2a803/datastream/OBJ/view