Title :
A compact low-noise fully differential bandgap voltage reference with intrinsic noise filtering
Author :
Longhitano, A.N. ; del Cesta, F. ; Bruschi, P. ; Simmarano, R.
Author_Institution :
Dipt. di Ing. dell´Inf., Univ. of Pisa, Pisa, Italy
fDate :
June 30 2014-July 3 2014
Abstract :
A new architecture for differential bandgap voltage references is presented. The system is based on a switched capacitor amplifier that performs correlated double sampling to cancel offset and reduce flicker noise while maintaining a valid output voltage throughout the clock cycle. The circuit noise is filtered by an intrinsic discrete time low-pass function with tunable cut-off frequency. A prototype designed with 0.18 um CMOS process is described. Preliminary performances are estimated by means of periodic noise analysis carried out with the SpectreRF simulator.
Keywords :
CMOS analogue integrated circuits; differential amplifiers; flicker noise; integrated circuit noise; low noise amplifiers; low-pass filters; reference circuits; switched capacitor networks; CMOS process; SpectreRF simulator; circuit noise; clock cycle; compact low-noise fully differential bandgap voltage reference; correlated double sampling; flicker noise reduction; intrinsic discrete time low-pass function; intrinsic noise filtering; offset cancellation; output voltage; periodic noise analysis; size 0.18 mum; switched capacitor amplifier; tunable cut-off frequency; 1f noise; CMOS integrated circuits; Capacitors; Clocks; Photonic band gap; Switches; correlated double sampling; differential bandgap; offset cancellation; switched capacitor;
Conference_Titel :
Ph.D. Research in Microelectronics and Electronics (PRIME), 2014 10th Conference on
Conference_Location :
Grenoble
DOI :
10.1109/PRIME.2014.6872687
