A picowatt CMOS voltage reference with 0.046 %/V line sensitivity for a low-power IoT system

Hyeongjun Kim, Taegun Yim, Choongkeun Lee, Hongil Yoon

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

Abstract

This paper introduces a subthreshold voltage reference consisting of two stages: the line sensitivity (LS) stage and the temperature coefficient (TC) stage. In the modified LS stage low-power voltage reference, the native transistor has been replaced with a gate-source connected NMOS. This modification results in process, voltage, and temperature (PVT) variation insensitivity while satisfying the desired pico-watt power consumption. To further enhance the LS, the two stages are configured with a source follower, resulting in a more stable transmission of the output voltage from the first stage to the second stage through the buffer. Additionally, the TC stage compensates for the TC of the Vref using the body effect. Simulated in a standard 180-nm CMOS process, the proposed circuit operates within a supply voltage range of 0.8 V to 1.8 V and generates 338 mV at room temperature. The circuit achieves a TC of 156 ppm/C in the temperature range of -20°C to 100°C, and LS of 0.046%/V. Furthermore, it exhibits a low power consumption of 26.7 pW at 25°C.

Original languageEnglish
Title of host publicationProceedings - International SoC Design Conference 2023, ISOCC 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages45-46
Number of pages2
ISBN (Electronic)9798350327038
DOIs
Publication statusPublished - 2023
Event20th International SoC Design Conference, ISOCC 2023 - Jeju, Korea, Republic of
Duration: 2023 Oct 252023 Oct 28

Publication series

NameProceedings - International SoC Design Conference 2023, ISOCC 2023

Conference

Conference20th International SoC Design Conference, ISOCC 2023
Country/TerritoryKorea, Republic of
CityJeju
Period23/10/2523/10/28

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Instrumentation

Fingerprint

Dive into the research topics of 'A picowatt CMOS voltage reference with 0.046 %/V line sensitivity for a low-power IoT system'. Together they form a unique fingerprint.

Cite this