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A second-order temperature compensated bandgap reference for analog -to -digital converter

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3 Author(s)
Junru Liu ; Coll. of Inf. & Commun. Eng., Tianjin Polytech. Univ., Tianjin, China ; Pingjuan Niu ; Tiecheng Gao

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.

Published in:

Computer Design and Applications (ICCDA), 2010 International Conference on  (Volume:1 )

Date of Conference:

25-27 June 2010