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http://dx.doi.org/10.5370/KIEE.2012.61.5.753

Modified Low-Votlage CMOS Bandgap Voltage Reference with CTAT Compensation  

Kim, Jae-Bung (전북대학교 전자공학부)
Cho, Seong-Ik (전북대학교 전자공학부)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.61, no.5, 2012 , pp. 753-756 More about this Journal
Abstract
In this paper, a modified low-votlage CMOS bandgap voltage reference with CTAT compensation is presented. The proposed structure doesn't use PTAT current. The proposed structure is more simple than the existing structure and doesn't use the eighteen BJT. The modified low-votlage CMOS bandgap voltage reference with CTAT compensation has been successfully verified in a standard 0.18um CMOS process. The simulation results have confirmed that, with the minimum supply voltage of 1.25V, the output reference voltage at 549mV has a temperature coefficient of 12$ppm/^{\circ}C$ from $0^{\circ}C$ to $100^{\circ}C$.
Keywords
Bandgap reference; Voltage reference; CTAT;
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