Print Email Facebook Twitter A Highly-Scalable Thermal-Diffusivity-Based Temperature Sensor Title A Highly-Scalable Thermal-Diffusivity-Based Temperature Sensor Author Angevare, J.A. Contributor Makinwa, K.A.A. (mentor) Faculty Electrical Engineering, Mathematics and Computer Science Department Electronic Instrumentation Laboratory Date 2015-12-17 Abstract A highly digital temperature sensor, based on the thermal diffusivity of silicon, for thermal management applications has been reported. Recently, Thermal-Diffusivity based temperature sensors have undergone a radical change from an analog-based readout architecture to a more digital VCO-based one. However the more digital approach led to significantly worse performance, i.e. accuracy and resolution. The proposed sensor uses the same digital approach but achieves much better performance. The sensor achieves an inaccuracy of ±2.9 °C (3?) from -35 °C to 125 °C with no trimming and ±1.2 °C (3?) after a single-point trim, while achieving a resolution of 0.47 °C (rms) at 1 kSa/s. Its compact area (2800 ?m²) is enabled by the adoption of a VCO-based phase-domain ADC. Since 53% of the sensor area is occupied by digital circuitry, the sensor can be easily ported to more advanced CMOS technologies with further area reduction, which makes it well suited for thermal monitoring in microprocessors and other systems-on-chip. Subject Thermal DiffusivityTemperature SensorPhase Domain Sigma-Delta Modulator To reference this document use: http://resolver.tudelft.nl/uuid:440b34ea-dfc8-4ef5-926c-e6c8df133a9c Embargo date 2020-12-09 Part of collection Student theses Document type master thesis Rights (c) 2015 Angevare, J.A.