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High-Performance Resistorless Sub-1V Bandgap Reference Circuit Based on Piecewise Compensation Technique

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5 Author(s)
Wing-Shan Tam ; City Univ. of Hong Kong, Kowloon ; Ka-Yan Mok ; Oi-Ying Wong ; Chi-Wah Kok
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A piecewise compensated sub-lV CMOS bandgap reference without using any resistors is presented. The design reduces the silicon chip area with improved circuit robustness. The bandgap reference is simulated with Spectre using SMIC 0.18 mum CMOS technology. It operates at a minimum voltage of 1.5 V and generates a stable voltage at 0.658 V with minimal temperature coefficient of plusmn 5.36 ppm/degC for temperature ranging from -10 to 130degC. It has a line regulation of 0.89% and a high power supply rejection ratio of -42.3 dB. The power consumption of this circuit is as low as 0.229 mA at 1.5 V input voltage.

Published in:

Electron Devices and Solid-State Circuits, 2007. EDSSC 2007. IEEE Conference on

Date of Conference:

20-22 Dec. 2007

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