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Design of a High Performance Bandgap Voltage Reference

XU Si-ming

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Abstract

The design of a 2nd order temperature compensation bandgap reference circuit based on the conventional 1st order temperature compensation bandgap reference circuit is described. This circuit has an average temperature coefficient of less than 2×10-6 per degree at the temperature from -35℃ to 125℃.The bandgap reference is implemented in a standard SMIC 0.35μm CMOS process. Simulation results using Hspice tools show that the voltage reference has a low temperature coefficient.

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What this paper is about

The design of a 2nd order temperature compensation bandgap reference circuit based on the conventional 1st order temperature compensation bandgap reference circuit is described. This circuit has an average temperature coefficient of less than 2×10-6 per degree at the temperature from -35℃ to 125℃.The bandgap reference is implemented in a standard SMIC 0.35μm CMOS process. Simulation results using Hspice tools show that the voltage reference has a low temperature coefficient.

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Available abstract

The design of a 2nd order temperature compensation bandgap reference circuit based on the conventional 1st order temperature compensation bandgap reference circuit is described. This circuit has an average temperature coefficient of less than 2×10-6 per degree at the temperature from -35℃ to 125℃.The bandgap reference is implemented in a standard SMIC 0.35μm CMOS process. Simulation results using Hspice tools show that the voltage reference has a low temperature coefficient.

Key concepts: Bandgap voltage reference, Temperature coefficient, Voltage reference, Silicon bandgap temperature sensor, Compensation (psychology), Materials science, Band gap, Voltage

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