Title :
A second-order temperature compensated bandgap reference for analog -to -digital converter
Author :
Liu, Junru ; Niu, Pingjuan ; Gao, Tiecheng
Author_Institution :
Coll. of Inf. & Commun. Eng., Tianjin Polytech. Univ., Tianjin, China
Abstract :
A proposed second-order temperature curvature compensated bandgap voltage reference circuit for analog-to-digital converter is presented. The circuit has high power supply rejection ratio (PSRR) and low-temperature coefficient. Based on the TSMC 0.18μm CMOS model,the simulation results using HSPICE show the temperature coefficient of the circuit is 8.62ppm/°C between the temperature range of -25°C to +115°C and the PSRR is the -100dB until 500Hz. The bandgap output voltage Vref swing is 0.02mV when the power supply voltage is between 2.5V and 4.5V.Therefore, this design is an effective way to implement a bandgap voltage reference.
Keywords :
CMOS integrated circuits; SPICE; analogue-digital conversion; HSPICE; TSMC CMOS model; analog-digital converter; bandgap output voltage; bandgap voltage reference circuit; low-temperature coefficient; power supply rejection ratio; second-order temperature curvature compensated voltage reference circuit; size 0.18 mum; temperature -25 degC to 115 degC; voltage 2.5 V to 4.5 V; Analog computers; Analog-digital conversion; Bipolar transistors; CMOS technology; Circuit simulation; Mirrors; Photonic band gap; Power supplies; Temperature distribution; Voltage; PSRR; bandgap voltage reference; second-order; temperature coefficient;
Conference_Titel :
Computer Design and Applications (ICCDA), 2010 International Conference on
Conference_Location :
Qinhuangdao
Print_ISBN :
978-1-4244-7164-5
Electronic_ISBN :
978-1-4244-7164-5
DOI :
10.1109/ICCDA.2010.5540853
