A bandgap voltage reference in 0.18µm CMOS technology

A low-temperature coefficient, curvature-compensated CMOS bandgap voltage reference (BGR) is presented in this paper. The design was implemented in standard 0.18μm CMOS process with 1.8V power supply. The compensation is achieved generating the negative temperature coefficient (TC) voltage with a qu...

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Bibliographic Details
Main Authors: Martinez-Nieto, A., Sanz-Pascual, M. T., Rosales-Quintero, P., Celma, Santiago
Format: Conference Proceeding
Language:English
Subjects:
Bandgap reference
Bipolar transistors
CTAT
curvature correction
IP networks
Mirrors
Photonic band gap
PTAT
Resistance
Resistors
temperature compensation
Temperature dependence
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Summary:A low-temperature coefficient, curvature-compensated CMOS bandgap voltage reference (BGR) is presented in this paper. The design was implemented in standard 0.18μm CMOS process with 1.8V power supply. The compensation is achieved generating the negative temperature coefficient (TC) voltage with a quadratic temperature dependent current biasing a bipolar transistor. In addition, the design has a 4-bit trimming circuit to compensate for process variations. The output voltage is 1.225V and shows a TC lower than 2ppm/°C over a temperature range of 160°C (-20°C to 140°C). The bandgap reference consumes 620μW and its total layout area is 217×147μm 2 .
ISSN:1548-3746
1558-3899
DOI:10.1109/MWSCAS.2013.6674594