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Energy-Efficient High-Resolution Resistor-Based Temperature Sensors

Date: 2017-06-14
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Energy-Efficient High-Resolution Resistor-Based Temperature Sensors

I. Details of the lecture 

Topic: Energy-Efficient High-Resolution Resistor-Based Temperature Sensors

Time:10:30am-12:00pm, June 16, 2017

Location: Room B311, Institute of Microelectronics

Speaker: Sining Pan   PhD student in Electronic Instrumentation Laboratory at TU Delft

II. Introduction to the speaker 

Sining Pan received his B.Sc degree in electronic engineering from Tsinghua University, Beijing, China, in 2013, and M.Sc degree in microelectronics from Delft University of Technology, in 2016. He is now a PhD student in Electronic Instrumentation Laboratory at TU Delft, and his research focuses on designing high-resolution energy-efficient temperature sensors. He has published 4 first-author papers in this field since 2017, including one at ISSCC and one at VLSI.

III. Content of lecture 

Temperature sensors are widely used for the temperature compensation of frequency references. To achieve low jitter and low power consumption, high resolution and energy efficiency are critical requirements for the associated temperature sensor. This talk presents two high-resolution energy-efficient CMOS temperature sensors. One is based on a Wien bridge RC filter, which outputs a temperature-dependent phase-shift when driven by a fixed frequency; the otheris based on a Wheatstone bridge, which outputs a temperature-dependent current.The bridge outputs are digitized by energy-efficient continuous-time Delta-Sigma modulators. Two prototypes were fabricated in a standard 0.18µm CMOS technology. Both dissipate less than 200µW, and achieve sub-mK resolution,as well as sub-0.2pJ·K2 resolution FoMs, which corresponds to state-of-the-art energy efficiency. 

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