A DTMOST-based Temperature Sensor with 3σ Inaccuracy of ±0.9°C for Self-Refresh Control in 28nm Mobile DRAM

Sunsik Park; Yunhong Kim; Woojun Choi; Yongtae Lee; Sungbeen Kim; Youngmin Shin; Youngcheol Chae

doi:10.1109/CICC48029.2020.9075873

A DTMOST-based Temperature Sensor with 3σ Inaccuracy of ±0.9°C for Self-Refresh Control in 28nm Mobile DRAM

Sunsik Park, Yunhong Kim, Woojun Choi, Yongtae Lee, Sungbeen Kim, Youngmin Shin, Youngcheol Chae

Department of Electrical and Electronic Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Citations (Scopus)

Abstract

This paper presents a compact temperature sensor that directly controls a temperature-dependent self-refresh period of a mobile DRAM in 28nm CMOS. It uses a dynamic threshold MOST (DTMOST) as a sensing device that periodically discharges a capacitor. The discharging voltage across the capacitor denotes a supply-independent behavior and the temperature-dependent discharging period of the DTMOST diode is detected by incorporating it into a relaxation oscillator. The sensor occupies only 0.017mm² and achieves a 3σ inaccuracy of ±0.9°C from -10 to 90°C after 1-point trim. Operating from 0.85 to 1.15V, it shows a low supply sensitivity of 0.27°C/V at room temperature. It consumes 33.75μW and achieves a resolution of 10.2mK. This corresponds to a resolution FoM of 0.36pJ· K².

Original language	English
Title of host publication	2020 IEEE Custom Integrated Circuits Conference, CICC 2020
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781728160313
DOIs	https://doi.org/10.1109/CICC48029.2020.9075873
Publication status	Published - 2020 Mar
Event	2020 IEEE Custom Integrated Circuits Conference, CICC 2020 - Boston, United States Duration: 2020 Mar 22 → 2020 Mar 25

Publication series

Name	Proceedings of the Custom Integrated Circuits Conference
Volume	2020-March
ISSN (Print)	0886-5930

Conference

Conference	2020 IEEE Custom Integrated Circuits Conference, CICC 2020
Country/Territory	United States
City	Boston
Period	20/3/22 → 20/3/25

Bibliographical note

Funding Information:
ACKNOWLEDGEMENTS This work is supported by Samsung Electronics.

Publisher Copyright:
© 2020 IEEE.

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

Access to Document

10.1109/CICC48029.2020.9075873

Cite this

Park, S., Kim, Y., Choi, W., Lee, Y., Kim, S., Shin, Y., & Chae, Y. (2020). A DTMOST-based Temperature Sensor with 3σ Inaccuracy of ±0.9°C for Self-Refresh Control in 28nm Mobile DRAM. In 2020 IEEE Custom Integrated Circuits Conference, CICC 2020 [9075873] (Proceedings of the Custom Integrated Circuits Conference; Vol. 2020-March). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CICC48029.2020.9075873

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title = "A DTMOST-based Temperature Sensor with 3σ Inaccuracy of ±0.9°C for Self-Refresh Control in 28nm Mobile DRAM",

abstract = "This paper presents a compact temperature sensor that directly controls a temperature-dependent self-refresh period of a mobile DRAM in 28nm CMOS. It uses a dynamic threshold MOST (DTMOST) as a sensing device that periodically discharges a capacitor. The discharging voltage across the capacitor denotes a supply-independent behavior and the temperature-dependent discharging period of the DTMOST diode is detected by incorporating it into a relaxation oscillator. The sensor occupies only 0.017mm2 and achieves a 3σ inaccuracy of ±0.9°C from -10 to 90°C after 1-point trim. Operating from 0.85 to 1.15V, it shows a low supply sensitivity of 0.27°C/V at room temperature. It consumes 33.75μW and achieves a resolution of 10.2mK. This corresponds to a resolution FoM of 0.36pJ· K2.",

author = "Sunsik Park and Yunhong Kim and Woojun Choi and Yongtae Lee and Sungbeen Kim and Youngmin Shin and Youngcheol Chae",

note = "Funding Information: ACKNOWLEDGEMENTS This work is supported by Samsung Electronics. Publisher Copyright: {\textcopyright} 2020 IEEE.; 2020 IEEE Custom Integrated Circuits Conference, CICC 2020 ; Conference date: 22-03-2020 Through 25-03-2020",

year = "2020",

month = mar,

doi = "10.1109/CICC48029.2020.9075873",

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Park, S, Kim, Y, Choi, W, Lee, Y, Kim, S, Shin, Y & Chae, Y 2020, A DTMOST-based Temperature Sensor with 3σ Inaccuracy of ±0.9°C for Self-Refresh Control in 28nm Mobile DRAM. in 2020 IEEE Custom Integrated Circuits Conference, CICC 2020., 9075873, Proceedings of the Custom Integrated Circuits Conference, vol. 2020-March, Institute of Electrical and Electronics Engineers Inc., 2020 IEEE Custom Integrated Circuits Conference, CICC 2020, Boston, United States, 20/3/22. https://doi.org/10.1109/CICC48029.2020.9075873

A DTMOST-based Temperature Sensor with 3σ Inaccuracy of ±0.9°C for Self-Refresh Control in 28nm Mobile DRAM. / Park, Sunsik; Kim, Yunhong; Choi, Woojun et al.

2020 IEEE Custom Integrated Circuits Conference, CICC 2020. Institute of Electrical and Electronics Engineers Inc., 2020. 9075873 (Proceedings of the Custom Integrated Circuits Conference; Vol. 2020-March).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AB - This paper presents a compact temperature sensor that directly controls a temperature-dependent self-refresh period of a mobile DRAM in 28nm CMOS. It uses a dynamic threshold MOST (DTMOST) as a sensing device that periodically discharges a capacitor. The discharging voltage across the capacitor denotes a supply-independent behavior and the temperature-dependent discharging period of the DTMOST diode is detected by incorporating it into a relaxation oscillator. The sensor occupies only 0.017mm2 and achieves a 3σ inaccuracy of ±0.9°C from -10 to 90°C after 1-point trim. Operating from 0.85 to 1.15V, it shows a low supply sensitivity of 0.27°C/V at room temperature. It consumes 33.75μW and achieves a resolution of 10.2mK. This corresponds to a resolution FoM of 0.36pJ· K2.

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Park S, Kim Y, Choi W, Lee Y, Kim S, Shin Y et al. A DTMOST-based Temperature Sensor with 3σ Inaccuracy of ±0.9°C for Self-Refresh Control in 28nm Mobile DRAM. In 2020 IEEE Custom Integrated Circuits Conference, CICC 2020. Institute of Electrical and Electronics Engineers Inc. 2020. 9075873. (Proceedings of the Custom Integrated Circuits Conference). doi: 10.1109/CICC48029.2020.9075873

A DTMOST-based Temperature Sensor with 3σ Inaccuracy of ±0.9°C for Self-Refresh Control in 28nm Mobile DRAM

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