2006Journal of Tianjin University Science and TechnologyRequires access

Low Voltage CMOS Bandgap Reference

Suying Yao

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Abstract

A CMOS bandgap reference circuit with 1.5 V supply voltage is described. The circuit is implemented using a standard 0. 5 μm digital CMOS process, which has a simple architecture and low power consumption, and achieves good stability of temperature and power supply. The simulation result shows that a power supply rejection ratio (PSRR) of 88 db and a temperature coefficient of 1. 9×10-5/℃ from - 40 ℃ to 140 ℃ can be obtained. Its total power consumption is about 37.627 5 μW.

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What this paper is about

A CMOS bandgap reference circuit with 1.5 V supply voltage is described. The circuit is implemented using a standard 0. 5 μm digital CMOS process, which has a simple architecture and low power consumption, and achieves good stability of temperature and power supply. The simulation result shows that a power supply rejection ratio (PSRR) of 88 db and a temperature coefficient of 1. 9×10-5/℃ from - 40 ℃ to 140 ℃ can be obtained. Its total power consumption is about 37.627 5 μW.

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Available abstract

A CMOS bandgap reference circuit with 1.5 V supply voltage is described. The circuit is implemented using a standard 0. 5 μm digital CMOS process, which has a simple architecture and low power consumption, and achieves good stability of temperature and power supply. The simulation result shows that a power supply rejection ratio (PSRR) of 88 db and a temperature coefficient of 1. 9×10-5/℃ from - 40 ℃ to 140 ℃ can be obtained. Its total power consumption is about 37.627 5 μW.

Key concepts: Bandgap voltage reference, Power supply rejection ratio, CMOS, Voltage reference, Temperature coefficient, Voltage, Power (physics), Electrical engineering

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