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Design of a High-accuracy Current Reference Circuit with Band Gap Configuration

Yong Li

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Abstract

A current reference circuit based on standard CMOS process is presented. With the introduction of band-gap configuration, the circuit can provide an output current with good temperature coefficient and excellent power supply rejection ability. When the power supply ranges from 2.5 V to 5.5 V and the temperature from-40℃ to 125℃,output current varies less than 2.6%.

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What this paper is about

A current reference circuit based on standard CMOS process is presented. With the introduction of band-gap configuration, the circuit can provide an output current with good temperature coefficient and excellent power supply rejection ability. When the power supply ranges from 2.5 V to 5.5 V and the temperature from-40℃ to 125℃,output current varies less than 2.6%.

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Available abstract

A current reference circuit based on standard CMOS process is presented. With the introduction of band-gap configuration, the circuit can provide an output current with good temperature coefficient and excellent power supply rejection ability. When the power supply ranges from 2.5 V to 5.5 V and the temperature from-40℃ to 125℃,output current varies less than 2.6%.

Key concepts: Bandgap voltage reference, Current (fluid), Temperature coefficient, Power (physics), Electrical engineering, CMOS, Circuit design, Electronic engineering

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