Paper Info
Title
Precision CMOS current reference with process and temperature compensation
Abstract
This paper presents a new first-order temperature compensated CMOS current reference. To achieve a compact architecture able to operate under low voltage with low power consumption, it is based on a self-biasing beta multiplier current generator. Compensation against temperature is achieved by using instead of an ordinary resistor two triode transistors in parallel, acting as a negative and a positive temperature coefficient resistor, that generate a proportional to absolute temperature and a complementary to absolute temperature current which can be directly added to attain a temperature compensated current. Programmability is included to adjust the temperature coefficient and the reference current magnitude over process variations. Results for a 0.18 μm CMOS implementation show that the proposed 500 nA reference operate with supplies down to 1.2 V accomplishing over a (-40 to +120°C) range temperature drifts below 120 ppm/°C.
Year
DOI
Venue
2014
10.1109/ISCAS.2014.6865284
Circuits and Systems
Keywords
Field
DocType
CMOS integrated circuits,compensation,low-power electronics,reference circuits,current 500 nA,first-order temperature compensated CMOS current reference,low power consumption,positive temperature coefficient resistor,process compensation,process variations,self-biasing beta multiplier current generator,size 0.18 mum,temperature coefficient,triode transistors,voltage 1.2 V,CMOS,current reference,low-voltage low-power,process compensation,temperature compensation
Triode,Computer science,Control theory,Temperature coefficient,CMOS,Multiplier (economics),Electronic engineering,Resistor,Low voltage,Transistor,Integrated injection logic,Electrical engineering
Conference
ISSN
Citations 
PageRank 
0271-4302
12
1.06
References 
Authors
3
4
Name
Order
Citations
PageRank
Cristina Azcona1346.35
Belén Calvo212027.19
Santiago Celma314543.45
Nicolás J. Medrano-Marqués49422.77