Compact Temperature Sensor with Voltage-Ratio Current-Independent Output for Reference Independent Data Conversion

A compact CMOS temperature sensor suitable for on-chip power/thermal management designed to monitor hotspot formation at multiple locations on a die is introduced. Temperature information is embedded in the ratio of two voltage outputs of the sensor to facilitate temperature to digital conversion wi...

Full description

Saved in:
Bibliographic Details
Main Authors: Banahene, Kwabena Oppong, Geiger, Randall
Format: Conference Proceeding
Language:English
Subjects:
Area-efficient
bulk effect
CMOS
compact temperature sensor
Current measurement
Data conversion
hotspot
Measurement uncertainty
MOSFET
self-referenced temperature-to-digital Conversion
Temperature distribution
Temperature measurement
Temperature sensors
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A compact CMOS temperature sensor suitable for on-chip power/thermal management designed to monitor hotspot formation at multiple locations on a die is introduced. Temperature information is embedded in the ratio of two voltage outputs of the sensor to facilitate temperature to digital conversion without the need for a separate reference for the data converter. The sensor is highly insensitive to temperature or stress-dependent bias current variations. Measured results in a sensor with devices from a 0.5μm CMOS process show an error of ±0.5°C over the temperature range of -10°C to 100°C when biased with a constant current. Even with ±5% variation in bias current an error of less than ±1°C over the -10°C to 100°C temperature range is achieved.
ISSN:2158-1525
DOI:10.1109/ISCAS58744.2024.10558256