Title :
All CMOS temperature, supply voltage and process independent current reference
Author :
Yi, Wang ; Lenain, He ; Xiaolang, Yan
Author_Institution :
Zhejiang Univ., Hangzhou
Abstract :
This paper describes an all CMOS current reference which generates temperature, supply voltage and process independent reference current. In such circuit, sub-threshold design and the body effect have been used to do the temperature compensation. Since only CMOS transistors are used here, the impact of process variation on reference current has been minimized. Cascode and feedback structure have been used to improve the power supply reject ratio. The Precision of reference current is plusmn 5.2% when considering the process, supply voltage and temperature variation at the same time. The circuit has been designed and simulated with CSMC 0.5um mixed-signal process.
Keywords :
CMOS integrated circuits; transistors; CMOS temperature; CMOS transistors; CSMC mixed-signal process; process independent current reference; reference current; supply voltage; temperature compensation; CMOS process; Circuits; Feedback; Helium; Power supplies; Resistors; Temperature distribution; Topology; Very large scale integration; Voltage; All CMOS; Body Effect; Current Reference; Process Variation;
Conference_Titel :
ASIC, 2007. ASICON '07. 7th International Conference on
Conference_Location :
Guilin
Print_ISBN :
978-1-4244-1132-0
Electronic_ISBN :
978-1-4244-1132-0
DOI :
10.1109/ICASIC.2007.4415702
