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A Background-Calibrated NPN-Based Temperature Sensor with 0.05°C (3σ) Inaccuracy from -70°C to 125°C

Conference Paper (2026)
Author(s)

Nandor G. Toth (TU Delft - Electrical Engineering, Mathematics and Computer Science)

Kofi A.A. Makinwa (TU Delft - Electrical Engineering, Mathematics and Computer Science)

Research Group
Electronic Instrumentation
DOI related publication
https://doi.org/10.1109/ISSCC49663.2026.11409074 Final published version
More Info
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Publication Year
2026
Language
English
Research Group
Electronic Instrumentation
Pages (from-to)
370-372
Publisher
IEEE
ISBN (electronic)
9798331589363
Event
2026 IEEE International Solid-State Circuits Conference, ISSCC 2026 (2026-02-15 - 2026-02-19), San Francisco, United States
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Abstract

In this work, an NPN-based temperature sensor is presented that introduces a background-calibration scheme to correct all current-domain errors in its front-end. It achieves an inaccuracy of 0.05°C (3σ) from -70°C to 125°C (RIA=0.05%) after a one-point trim, which represents the state-of-the-art energy efficiency (100fJ∙K2) and power supply sensitivity (PSS) (0.004°C/V).

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