Miniaturized, 0.01 mm2, Resistor-Based Thermal Sensor with an Energy Consumption of 0.9 nJ and a Conversion Time of 80 μs for Processor Applications

Anatoli Mordakhay; Joseph Shor

doi:10.1109/JSSC.2018.2861862

Miniaturized, 0.01 mm², Resistor-Based Thermal Sensor with an Energy Consumption of 0.9 nJ and a Conversion Time of 80 μs for Processor Applications

Anatoli Mordakhay, Joseph Shor

Bar-Ilan University - The Alexander Kofkin Faculty of Engineering

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

Thermal sensing is a key power management feature in microprocessor products and other integrated circuits. There can be as many as 40 sensors on a chip. Thus, it is important for these sensors to have a highly compact area, as well as low energy. In this paper, we report a novel resistor-based thermal sensor with an area of 0.01 mm² in 65-nm process, an energy consumption of 0.9 nJ/conversion, and a conversion speed of 80 μ This sensor is one of the smallest, fastest, and lowest energy sensors reported which utilize resistors as the sensing element, making it optimal for CPU applications. The sensor has a competitive resolution figure of merit of 0.02 nJ · K², as well as a relative inaccuracy of 1.4 °C, which easily meets the accuracy requirements of these applications. The circuit architecture is based on the measurement of an RC time constant using a novel amplifier/comparator circuit, along with a dynamic bias for power savings.

Original language	English
Article number	8445659
Pages (from-to)	2958-2969
Number of pages	12
Journal	IEEE Journal of Solid-State Circuits
Volume	53
Issue number	10
DOIs	https://doi.org/10.1109/JSSC.2018.2861862
State	Published - Oct 2018

Bibliographical note

Publisher Copyright:
© 1966-2012 IEEE.

Funding

Manuscript received February 9, 2018; revised May 8, 2018 and June 24, 2018; accepted July 24, 2018. Date of publication August 24, 2018; date of current version September 21, 2018. This paper was approved by Associate Editor Dennis Sylvester. This work was supported by Hiper Consortium of the Israel Innovation Authority. (Corresponding author: Anatoli Mordakhay.) The authors are with the Faculty of Engineering, Bar-Ilan University, Ramat Gan 52900, Israel (e-mail: [email protected]; [email protected]).

Funders	Funder number
Hiper Consortium of the Israel Innovation Authority

Keywords

CMOS temperature sensor
Calibration
resistor-based sensor
temperature compensation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/JSSC.2018.2861862

Cite this

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abstract = "Thermal sensing is a key power management feature in microprocessor products and other integrated circuits. There can be as many as 40 sensors on a chip. Thus, it is important for these sensors to have a highly compact area, as well as low energy. In this paper, we report a novel resistor-based thermal sensor with an area of 0.01 mm2 in 65-nm process, an energy consumption of 0.9 nJ/conversion, and a conversion speed of 80 μ This sensor is one of the smallest, fastest, and lowest energy sensors reported which utilize resistors as the sensing element, making it optimal for CPU applications. The sensor has a competitive resolution figure of merit of 0.02 nJ · K2, as well as a relative inaccuracy of 1.4 °C, which easily meets the accuracy requirements of these applications. The circuit architecture is based on the measurement of an RC time constant using a novel amplifier/comparator circuit, along with a dynamic bias for power savings.",

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