Title :
A Novel High PSR Voltage Reference with Secondary Temperature Compensation
Author :
Ning Zhi-Hua ; He Le-nian ; Wang Yi ; Shao Ya-Li
Author_Institution :
Inst. of VLSI Design, Zhejiang Univ., Hangzhou, China
Abstract :
A novel voltage reference based on Kujik bandgap is proposed in this paper. An extra amplifier and bipolar are used to produce a current of positive temperature coefficient, which is for compensating the Kujik bandgap reference in high temperature. The reference finally has a temperature coefficient of only 10 ppm/°C. A negative feedback loop is introduced to provide a pre-regulated power supply for the voltage reference, which has increased the power supply rejection (PSR) of the voltage reference to -120 dB@dc. The circuit has been designed with TSMC 0.35 μm CMOS process, and the measurements agree our design.
Keywords :
CMOS integrated circuits; operational amplifiers; power supplies to apparatus; temperature control; CMOS process; Kujik bandgap reference; PSR; TSMC; negative feedback loop; power supply rejection; pre-regulated power supply; secondary temperature compensation; size 0.35 mum; temperature coefficient; voltage reference; CMOS integrated circuits; Equations; Mathematical model; Photonic band gap; Temperature; Temperature measurement; Temperature sensors; Kujik bandgap; PSR; secondary temperature compensation; voltage reference;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6880-5
DOI :
10.1109/iCECE.2010.781
