Title :
A CMOS supply-insensitive with 13ppm/°C temperature coefficient current reference
Author :
Yen-Ting Wang ; Degang Chen ; Geiger, Randall L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA
Abstract :
A simple all CMOS low temperature coefficient current reference is designed. Two opposite temperature coefficient supply-insensitive self-bias reference generators that have a function of threshold voltage, mobility and resistor are utilizing to compensate the first-order and second-order temperature curvature. The proposed circuit is designed in AMI 0.5μm process with 5V supply voltage over the temperature range of -45°C to 125 °C. The proposed circuit achieves a 16μA current with temperature coefficient of 13ppm/°C, the supply variation of the designed current is ±1.2% over ±10% VDD change and the accuracy over process variation is ±4.1%.
Keywords :
CMOS integrated circuits; compensation; cryogenic electronics; reference circuits; AMI process; CMOS low temperature coefficient current reference; CMOS supply-insensitivity; current 16 muA; first-order temperature curvature; resistor; second-order temperature curvature; size 0.5 mum; temperature coefficient supply-insensitive self-bias reference generators; threshold voltage function; voltage 5 V; CMOS integrated circuits; Generators; Resistors; Temperature; Temperature dependence; Temperature sensors; Threshold voltage; Current reference; temperature insensitive;
Conference_Titel :
Circuits and Systems (MWSCAS), 2014 IEEE 57th International Midwest Symposium on
Conference_Location :
College Station, TX
Print_ISBN :
978-1-4799-4134-6
DOI :
10.1109/MWSCAS.2014.6908455
