Title :
A −115dB PSRR CMOS bandgap reference with a novel voltage self-regulating technique
Author :
Yuanming Zhu ; Fei Liu ; Yajuan Yang ; Guocheng Huang ; Tao Yin ; Haigang Yang
Author_Institution :
Univ. of Chinese Acad. of Sci., Beijing, China
Abstract :
A novel high PSRR bandgap reference is presented in this paper. Neither operational amplifiers nor any filtering capacitor are used in this design. The circuit employs a self-regulating technique to significantly suppress the supply noise over a broad frequency range. And the problem of supply coupling noise caused by the traditional start-up circuit is also avoided by an improved design. The whole circuit has been implemented in 0.18μm standard CMOS process. Experimental results demonstrate that the PSRR of the voltage reference has achieved -115dB@DC and -90dB@10MHz. A temperature coefficient of 11.68 ppm/°C is obtained in the range of -40°C to 125°C. The current consumption for voltage self-regulating circuit proposed is only 42μA.
Keywords :
CMOS integrated circuits; integrated circuit design; integrated circuit noise; interference suppression; power supply circuits; voltage regulators; CMOS process; PSRR CMOS bandgap reference; current consumption; filtering capacitor; frequency 10 MHz; operational amplifiers; power supply rejection ratio; size 0.18 mum; start-up circuit; supply coupling noise; supply noise; temperature -40 degC to 125 degC; temperature coefficient; voltage self-regulating circuit; voltage self-regulating technique; Generators; Noise; Photonic band gap; Semiconductor device measurement; Temperature measurement; Voltage control; Voltage measurement;
Conference_Titel :
Custom Integrated Circuits Conference (CICC), 2014 IEEE Proceedings of the
Conference_Location :
San Jose, CA
DOI :
10.1109/CICC.2014.6946006
