In this article, a compact ultralow-power smart temperature sensor realized in 130-nm standard CMOS technology, provided by STMicroelectronics, is presented. The sensor is designed with the aim of measuring local temperature variations in the range of -20 °C-85 °C in temperature drift compensation applications. It relies on a simple circuit topology that employs two current-controlled oscillators - a divider and a 15-bit counter - which allows temperature-to-digital conversion. Experimental results show an inaccuracy of ±0.6 °C ( 3σ ) and a resolution of 0.012 °C with power consumption as low as 6μW at 1.3-V power supply with a total die area of only 0.00916 mm2.
A Compact Temperature Sensor with a Resolution FoM of 1.82 pJ·K2
Ballo A.;Grasso A. D.
Primo
;
2020-01-01
Abstract
In this article, a compact ultralow-power smart temperature sensor realized in 130-nm standard CMOS technology, provided by STMicroelectronics, is presented. The sensor is designed with the aim of measuring local temperature variations in the range of -20 °C-85 °C in temperature drift compensation applications. It relies on a simple circuit topology that employs two current-controlled oscillators - a divider and a 15-bit counter - which allows temperature-to-digital conversion. Experimental results show an inaccuracy of ±0.6 °C ( 3σ ) and a resolution of 0.012 °C with power consumption as low as 6μW at 1.3-V power supply with a total die area of only 0.00916 mm2.| File | Dimensione | Formato | |
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