Title :
A 0.9-V high-PSRR bandgap with self-cascode current mirror
Author :
Tianlin Cao ; Yan Han ; Xiaopeng Liu ; Hao Luo ; Lu Liao ; Hao Zhang
Author_Institution :
Inst. of Microelectron. & Photoelectron., Zhejiang Univ., Hangzhou, China
Abstract :
A 0.9-V supply voltage, high power supply rejection ratio (high-PSRR) bandgap reference with high-order compensation is presented. By inserting a group of self-cascode current mirrors and adopting an effective technique of high-order compensation, this bandgap reference is designed in 0.18 μm CMOS process. Simulation has been carried out and the results prove that the PSRR and temperature coefficient (TC) are both improved evidently in low voltage. Under 0.9 V supply voltage, the bandgap reference´s PSRR is -86 dB at 1 kHz and -25 dB at 1 MHz, its TC is 0.096 ppm/°C from -40 °C to +85 °C, consuming a total current of 86.6 μA.
Keywords :
CMOS integrated circuits; energy gap; low-power electronics; CMOS process; current 86.6 muA; frequency 1 MHz; frequency 1 kHz; high power supply rejection ratio bandgap reference; high-PSRR bandgap; high-order compensation; selfcascode current mirror; size 0.18 mum; temperature -40 C to 85 C; temperature coefficient; voltage 0.9 V; CMOS process; MOSFETs; Mirrors; Noise; Photonic band gap; Power supplies; Threshold voltage; bandgap reference; high PSRR; low voltage; self-cascode;
Conference_Titel :
Circuits and Systems (ICCAS), 2012 IEEE International Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4673-3117-3
Electronic_ISBN :
978-1-4673-3118-0
DOI :
10.1109/ICCircuitsAndSystems.2012.6408273
