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CMOS Low Voltage Precision Bandgap Reference

Shi Ying-wei

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Abstract

Basing on current mode bandgap topology structure,a bandgap reference capable of operating at a low voltage down to 1V,which is implemented in 0.18μm CMOS process,is presented.Simulation result shows that the temperature coefficient is less than 10ppm/℃ over-20℃~80℃,and the power supply rejection ratio is larger than-64dB.The area of the chip is 53μm×44μm.

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What this paper is about

Basing on current mode bandgap topology structure,a bandgap reference capable of operating at a low voltage down to 1V,which is implemented in 0.18μm CMOS process,is presented.Simulation result shows that the temperature coefficient is less than 10ppm/℃ over-20℃~80℃,and the power supply rejection ratio is larger than-64dB.The area of the chip is 53μm×44μm.

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Available abstract

Basing on current mode bandgap topology structure,a bandgap reference capable of operating at a low voltage down to 1V,which is implemented in 0.18μm CMOS process,is presented.Simulation result shows that the temperature coefficient is less than 10ppm/℃ over-20℃~80℃,and the power supply rejection ratio is larger than-64dB.The area of the chip is 53μm×44μm.

Key concepts: Bandgap voltage reference, CMOS, Silicon bandgap temperature sensor, Voltage reference, Computer science, Voltage, Band gap, Chip

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