A low power temperature sensor based on a voltage to time converter cell

Saqib Mohamad, Fang Tang, Amine Bermak, Abbes Amira, Mohieddine Benammar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

In this paper we propose a temperature sensor, based on a voltage to time converter cell (VTC). A VTC is frequently employed in time to digital converters for generating a delay that is proportional to the input voltage. The delay can then be digitized using a simple ripple counter at the output driven by a temperature independent clock. The power consumption of the proposed sensor is extremely low at 250nW, with an inaccuracy of +0.8°C to -1.5°C after two point calibration. A comparator with switchable bias currents is used to reduce the power consumption, while the temperature compensated current source is implemented using a low power current source. The sensor also exhibits high linearity over the 0 to 100 °C temperature range, while being powered by a 1.8V supply.

Original languageEnglish
Title of host publication2013 25th International Conference on Microelectronics, ICM 2013
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event2013 25th International Conference on Microelectronics, ICM 2013 - Beirut, Lebanon
Duration: 15 Dec 201318 Dec 2013

Other

Other2013 25th International Conference on Microelectronics, ICM 2013
CountryLebanon
CityBeirut
Period15/12/1318/12/13

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Mohamad, S., Tang, F., Bermak, A., Amira, A., & Benammar, M. (2013). A low power temperature sensor based on a voltage to time converter cell. In 2013 25th International Conference on Microelectronics, ICM 2013 [6734994] https://doi.org/10.1109/ICM.2013.6734994