期刊
IEEE SOLID-STATE CIRCUITS LETTERS
卷 1, 期 1, 页码 14-17出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LSSC.2018.2797427
关键词
Body-bias calibration; CMOS sensor; digital curvature correction; temperature sensor; wide voltage range
An embedded digital temperature sensor based on a single-ended probe is implemented in a 28 nm fully depleted silicon-on-insulator process. The nMOS-only ring-oscillator probe uses singlepoint calibration based on body-bias tuning of its well for process compensation. Nonlinearity compensation is implemented on-chip in custom digital logic, resulting in an area-efficient (225 mu m(2) per probe, 11 482 mu m(2) for the full system) sensor while achieving -1.4 degrees C/+1.3 degrees C accuracy using 2.0 nJ/sample and maintaining functionality over a 0.62-1.2 V range, making it suitable for temperature monitoring in digital systems-on-chip.
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