Abstract
This paper describes an energy-efficient CMOS temperature sensor intended for use in RFID tags. The sensor achieves an inaccuracy of ±0.15°C (3σ) over the military temperature range (-55 to 125°C) and dissipates only 27nJ/conversion: over 20× less than a previous sensor with comparable accuracy and resolution [2]. This energy efficiency is achieved by the use of an improved charge-balancing scheme and a zoom ADC that combines a 5b coarse SAR conversion with a 10b fine 2 nd -order ΔΣ conversion.
Original language | English |
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Title of host publication | Digest of Technical Papers 2012 IEEE International Solid-state Circuits Conference |
Editors | L Fujino |
Place of Publication | Piscataway, NJ |
Publisher | IEEE Society |
Pages | 208-210 |
Number of pages | 3 |
ISBN (Print) | 978-1-4673-0377-4 |
DOIs | |
Publication status | Published - 2012 |
Event | ISSCC 2012, San Francisco, California - Piscataway, NJ, USA Duration: 19 Feb 2012 → 23 Feb 2012 |
Conference
Conference | ISSCC 2012, San Francisco, California |
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Period | 19/02/12 → 23/02/12 |
Bibliographical note
Accepted author manuscriptKeywords
- Temperature sensors
- Calibration
- Energy efficiency
- Capacitors
- Temperature measurement
- Energy resolution