Title :
Voltage reference with second order curvature correction
Author :
Necula, Iustin-Catalin ; Popa, Cosmin Radu
Author_Institution :
Fac. of Electron., Telecommun. & Inf. Technol., Politeh. Univ. of Bucharest, Bucharest, Romania
Abstract :
This paper describes a bandgap voltage reference with second order curvature correction which utilizes a cvasi-independent temperature current and a Buck voltage transfer cell to compensate the non-linear term of the VBE´s expression. The proposed circuit is implemented in a 0.35um CMOS technology and achieves a 2.36ppm/ C temperature coefficient (TC) in a temperature range from -40 to 150 C. The nominal supply voltage is 3V and the consumed power is 558uW. The power supply rejection ratio (PSRR) is -50dB at 10kHz and -30dB at 100kHz.
Keywords :
CMOS integrated circuits; nonlinear network analysis; reference circuits; Buck voltage transfer cell; CMOS technology; PSRR; bandgap voltage reference; circuit implementation; cvasi-independent temperature current cell; nonlinear term compensation; power supply rejection ratio; second order curvature correction; size 0.35 mum; temperature -40 degC to 150 degC; temperature coefficient; voltage 3 V; Decision support systems; Buck voltage cell; bandgap; voltage reference;
Conference_Titel :
Semiconductor Conference (CAS), 2014 International
Conference_Location :
Sinaia
Print_ISBN :
978-1-4799-3916-9
DOI :
10.1109/SMICND.2014.6966451
