Journal
IEEE SOLID-STATE CIRCUITS LETTERS
Volume 1, Issue 3, Pages 70-73Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LSSC.2018.2827883
Keywords
Duty-cycling; dynamic; Internet-of-Things (IoT); resistive bridge; SAR ADC; temperature sensor
Funding
- European Union's Horizon 2020 Research and Innovation Programme [665347]
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A versatile resistive temperature sensor for Internet-of-Things is presented, based on an all-dynamic architecture. This allows efficient scaling of power with conversion rate, enables optional over-sampling for an adaptable resolution, and provides efficient adaptability to different resistor values. A new double-sided measurement mode is proposed to compensate for offset, 1/f noise and nonidealities at system level. The sensor achieves a minimum power consumption of 174 pW at 1 S/s measurement rate, which scales up to 488.3 nW at 100 kS/s. It offers a nominal rms resolution of 0.61 degrees C and a resolution FoM as low as 1.82 pJ.degrees C-2.
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