A 2.18pJ/conversion, 1656um2 Temperature Sensor with a 0.61pJ K2 FoM and 52-pW Stand-By Power

Kevin Pelzers; Haoming Xin; Eugenio Cantatore; Pieter Harpe

doi:10.1109/LSSC.2020.3005784

A 2.18pJ/conversion, 1656um² Temperature Sensor with a 0.61pJ K² FoM and 52-pW Stand-By Power

Kevin Pelzers (Corresponding author), Haoming Xin, Eugenio Cantatore, Pieter Harpe

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

1 Citation (Scopus)

Abstract

This letter describes a miniature, ultra low power, all-dynamic temperature sensor based on a duty-cycled resistive transducer bridge and a 9-bit asynchronous SAR ADC in 65-nm CMOS. It features a novel floating bridge technique and automatic power gating to achieve the lowest reported power consumption. It consumes 2.18 pJ per conversion and has an RMS resolution of 0.53 K, leading to an FoM of 0.61 pJ·K 2 . A standby power of 52 pW allows a high power-efficiency, even at low sample rates. It occupies 36×46 μm of chip area and has a sensing range from -20 °C to 120 °C.

Original language	English
Article number	9129838
Pages (from-to)	82-85
Number of pages	4
Journal	IEEE Solid-State Circuits Letters
Volume	3
DOIs	https://doi.org/10.1109/LSSC.2020.3005784
Publication status	Published - 2020

Keywords

Duty-cycling
dynamic
Internet-of-Things (IoT)
low power
power gating
resistive bridge
SAR ADC
temperature sensor

Access to Document

10.1109/LSSC.2020.3005784

Link to publication in Scopus

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abstract = "This letter describes a miniature, ultra low power, all-dynamic temperature sensor based on a duty-cycled resistive transducer bridge and a 9-bit asynchronous SAR ADC in 65-nm CMOS. It features a novel floating bridge technique and automatic power gating to achieve the lowest reported power consumption. It consumes 2.18 pJ per conversion and has an RMS resolution of 0.53 K, leading to an FoM of 0.61 pJ·K 2 . A standby power of 52 pW allows a high power-efficiency, even at low sample rates. It occupies 36×46 μm of chip area and has a sensing range from -20 °C to 120 °C.",

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AU - Harpe, Pieter

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