5.3 A Highly Digital 2210μm<sup>2</sup> Resistor-Based Temperature Sensor with a 1-Point Trimmed Inaccuracy of ± 1.3 ° C (3 σ) from -55 ° C to 125 ° C in 65nm CMOS
Jan Angevare, Youngcheol Chae, Kofi A. A. Makinwa
Abstract
Microprocessors and SoCs employ multiple temperature sensors to prevent overheating and ensure reliable operation. Such sensors should be small (<; 10,000μm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ) to monitor local hot-spots in dense layouts. They should also be moderately accurate (~1°C) up to high temperatures (≥125°C), so that the system throttling temperature can be set as close as possible to the maximum allowable die temperature. Furthermore, they should be fast (~1kS/s) and consume low power (tens of μW).
Topics & Concepts
ResistorSet pointOverheating (electricity)Temperature measurementPhysicsComputer scienceMaterials scienceAnalytical Chemistry (journal)Electrical engineeringChemistryEngineeringThermodynamicsChromatographyControl engineeringVoltageCCD and CMOS Imaging SensorsAnalog and Mixed-Signal Circuit DesignSensor Technology and Measurement Systems