A Highly Digital 2210μm2Resistor-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 (TU Delft - Electronic Instrumentation)
Youngcheol Chae (Yonsei University)
Kofi A. Makinwa (TU Delft - Microelectronics)
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Abstract
Microprocessors and SoCs employ multiple temperature sensors to prevent overheating and ensure reliable operation. Such sensors should be small (<10,000μm2) 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).