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Bandgap current reference using widlar current source

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Title Bandgap current reference using widlar current source
 
Creator Aggarwal, Bhawna
Arora, Yogita
Dhona, Jasdeep Kaur
 
Subject Widlar current source
Bandgap current reference
PTAT circuit
CTAT circuit
Temperature insensitivity
 
Description 934-938
This paper has proposed a temperature insensitive current reference (CR) using Widlar current source. This CR has overwhelmed the direct relation of current to temperature present in Widlar current source. To obtain temperature insensitivity the proposed CR has been combined the complementary temperature behavior of current across MOSFET and BJT. Eldospice has supported the simulations of the proposed circuit using level 53, 0.18 µm CMOS technology with the help of EldoSpice. The proposed circuit has presented almost constant reference current of 63µA at a supply voltage of 1.8V for a temperature range of -30 to 100 °C. The proposed circuit has shown the maximum variation of 0.1µA as compared to 24.87µA in conventional Widlar current source.
 
Date 2020-11-24T08:17:20Z
2020-11-24T08:17:20Z
2020-08
 
Type Article
 
Identifier 0975-1017 (Online); 0971-4588 (Print)
http://nopr.niscair.res.in/handle/123456789/55672
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJEMS Vol.27(4) [August 2020]