Title :
A CMOS Voltage Reference with Temperature Sensor using Self-PTAT Current Compensation
Author :
Chih-Peng Liu ; Han-Pang Huang
Author_Institution :
Dept. of Mech. Eng., Nat. Taiwan Univ., Taipei
Abstract :
An all-CMOS circuit for combined voltage reference and temperature sensor is proposed. For voltage reference design, a self-PTAT current is generated for compensating a diode-connected NMOS transistor for achieving temperature-independent purpose. In addition, an ultra linear temperature sensor can be realized and achieved simultaneously. The circuit topology is very suitable for SoC integration. The voltage reference provides a stable voltage for analog circuit. Moreover, the temperature sensor increases the system reliability by predicting eventual faults caused by excessive chip temperatures
Keywords :
CMOS analogue integrated circuits; avalanche diodes; compensation; integrated circuit reliability; reference circuits; temperature sensors; CMOS voltage reference; NMOS transistor; SoC integration; analog circuit; circuit topology; self-PTAT current compensation; system reliability; temperature sensor; Temperature sensors; Voltage;
Conference_Titel :
SOC Conference, 2005. Proceedings. IEEE International
Conference_Location :
Herndon, VA
Print_ISBN :
0-7803-9264-7
DOI :
10.1109/SOCC.2005.1554450
