Research PaperNo Access

A 0.55 V Bandgap Reference with a 59 ppm/°C Temperature Coefficient

School of Engineering, Computing and Mathematics, Oxford Brookes University, Wheatley Campus, Wheatley, Oxford, OX33 1HX, UK

E-mail Address: rajatbrookes@gmail.com

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K. Hayatleh

http://orcid.org/0000-0003-0149-1772

School of Engineering, Computing and Mathematics, Oxford Brookes University, Wheatley Campus, Wheatley, Oxford, OX33 1HX, UK

E-mail Address: khayatleh@brookes.ac.uk

Corresponding author.

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S. Barker

School of Engineering, Computing and Mathematics, Oxford Brookes University, Wheatley Campus, Wheatley, Oxford, OX33 1HX, UK

E-mail Address: stevebarker@brookes.ac.uk

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A. A. Tammam

School of Engineering, Computing and Mathematics, Oxford Brookes University, Wheatley Campus, Wheatley, Oxford, OX33 1HX, UK

E-mail Address: tammamamr@gmail.com

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P. Georgiou

Electrical and Electronic Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK

E-mail Address: pantelis@imperial.ac.uk

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, and

F. J. Lidgey

School of Engineering, Computing and Mathematics, Oxford Brookes University, Wheatley Campus, Wheatley, Oxford, OX33 1HX, UK

E-mail Address: johnlidgey@gmail.com

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https://doi.org/10.1142/S0218126619501202Cited by:24 (Source: Crossref)

Abstract

This paper presents a novel low power, low voltage CMOS bandgap reference (BGR) that overcomes the problems with the existing BJT-based reference circuits by using a MOS transistor operating in sub-threshold region. A proportional to absolute temperature (PTAT) voltage is generated by exploiting the self-bias cascode branch, while a Complementary to Absolute Temperature (CTAT) voltage is generated by using the threshold voltage of the transistor. The proposed circuit is implemented in 65nm CMOS technology. Post-layout simulation results show that the proposed circuit works with a supply voltage of 0.55V, and generates a 286mV reference voltage with a temperature coefficient of 59ppm/^∘C. The circuit takes 413nA current from 0.55V supply and occupies 0.00986mm² of active area.

This paper was recommended by Regional Editor Piero Malcovati.

Keywords:

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