Leakage-based On-Chip Thermal Sensor for CMOS Technology

Abstract— Thermal characterization of ICs and on-chip temperature monitoring has become a key task in electronic engineering. In this paper, we present the design of an on-chip CMOS temperature sensor based on the temperature dependent characteristics of the subthreshold current. The proposed sensor achieves high accuracy sensing (0.91o C maximum error), wide temperature range (25-90o C), and extremely low area (0.012 mm2 ) and power overhead (0.70 µW). Our approach improves previous works on on-chip temperature sensors and is highly suitable for portable applications where temperature monitoring achieves great importance.

• Type: Conference
• Year: 2007
• Where: ISCAS
• Authors: Pablo Ituero, José L. Ayala, Marisa López-Vallejo
• Keywords: ISCAS 2007, On-chip Temperature, On-chip Temperature Monitoring, Temperature Sensors