DocumentCode :
1638262
Title :
A novel high PSRR bandgap over a wide frequency range
Author :
Kang, Xiaozhi ; Tang, Zhangwen
Author_Institution :
Dept. of Microelectron., Fudan Univ., Shanghai, China
fYear :
2010
Firstpage :
418
Lastpage :
420
Abstract :
This paper describes a novel bandgap reference with high PSRR over a wide frequency range. The design utilizes an internally regulated supply voltage without high gain feedback loop. Thus improve PSRR even at high frequency. Additional transistors are added to further improve supply rejection and minimize the second order effect. The circuit is implemented in 0.25 μm CMOS technology. It generates a reference voltage of 1.262 V which has a voltage variation versus temperature of 0.1% from -20 C to 90 C. It has a PSRR of 85 dB at 1 kHz and still 64 dB at 1MHz.
Keywords :
CMOS integrated circuits; transistors; voltage regulators; CMOS technology; PSRR bandgap reference; frequency 1 MHz; frequency 1 kHz; reference voltage; regulated supply voltage; size 0.25 mum; temperature -20 C to 90 C; transistor; voltage 1.262 V; voltage variation; wide frequency range; Feedback loop; Mirrors; Photonic band gap; Resistance; Simulation; Transistors; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State and Integrated Circuit Technology (ICSICT), 2010 10th IEEE International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-5797-7
Type :
conf
DOI :
10.1109/ICSICT.2010.5667691
Filename :
5667691
Link To Document :
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