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An Energy-Efficient BJT-Based Temperature Sensor with ±0.8 °C (3 σ) Inaccuracy from −50 to 150 °C.
- Source :
-
Sensors (14248220) . Dec2022, Vol. 22 Issue 23, p9381. 14p. - Publication Year :
- 2022
-
Abstract
- This article presents an energy-efficient BJT-based temperature sensor. The output of sensing front-ends is modulated by employing an incremental Δ - Σ ADC as a readout interface. The cascoded floating-inverter-based dynamic amplifier (FIA) is used as the integrator instead of the conventional operational transconductance amplifier (OTA) to achieve a low power consumption. To enhance the accuracy, chopping and dynamic element matching (DEM) are applied to eliminate the component mismatch error while β -compensation resistor and optimized bias current are used to minimize the effect of β variation. Fabricated in a standard 180-nm CMOS process, this sensor has an active area of 0.13 mm 2 . While dissipating only 45.7 μ W in total, the sensor achieves an inaccuracy of ±0.8 °C (3 σ) from −50 °C to 150 °C after one-point calibration. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14248220
- Volume :
- 22
- Issue :
- 23
- Database :
- Academic Search Index
- Journal :
- Sensors (14248220)
- Publication Type :
- Academic Journal
- Accession number :
- 160741491
- Full Text :
- https://doi.org/10.3390/s22239381