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2004•Journal of Circuits and SystemsRequires access

A 10-ppm/~oC Low Voltage CMOS Band-gap Voltage Reference

Zhu Zhangming

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Abstract

The design of a 10-ppm/oC CMOS band-gap voltage reference with low power supply voltage in temperature compensation, current compensation and resistive subdivision technology is described. The amplifier for band-gap reference minus-feedback application is one stage differential amplifier. The biasing of the amplifier is derived from the output voltage, leading to a high power supply rejection (PSRR). The band-gap references is implemented in a standard 0.35m CMOS process leading to an output voltage of about 780mV. Simulation results using Hspice tools show that the low temperature coefficient and high PSRR of the proposed band-gap reference are ensured.

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What this paper is about

The design of a 10-ppm/oC CMOS band-gap voltage reference with low power supply voltage in temperature compensation, current compensation and resistive subdivision technology is described. The amplifier for band-gap reference minus-feedback application is one stage differential amplifier. The biasing of the amplifier is derived from the output voltage, leading to a high power supply rejection (PSRR). The band-gap references is implemented in a standard 0.35m CMOS process leading to an output voltage of about 780mV. Simulation results using Hspice tools show that the low temperature coefficient and high PSRR of the proposed band-gap reference are ensured.

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Available abstract

The design of a 10-ppm/oC CMOS band-gap voltage reference with low power supply voltage in temperature compensation, current compensation and resistive subdivision technology is described. The amplifier for band-gap reference minus-feedback application is one stage differential amplifier. The biasing of the amplifier is derived from the output voltage, leading to a high power supply rejection (PSRR). The band-gap references is implemented in a standard 0.35m CMOS process leading to an output voltage of about 780mV. Simulation results using Hspice tools show that the low temperature coefficient and high PSRR of the proposed band-gap reference are ensured.

Key concepts: Power supply rejection ratio, Bandgap voltage reference, Voltage reference, Electrical engineering, CMOS, Operational amplifier, Voltage, Biasing

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