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2008•Journal of Anhui UniversityRequires access

A 2.5 V 19-ppm/℃ bandgap reference voltage source

Huang Zhi

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Abstract

A high-precision and low temperature coefficient CMOS bandgap reference voltage source was presented.Prototype of the circuit was simulated using charted 0.35 μm CMOS process.The power supply was 2.5 V.The output reference voltage exhibited(915.4±0.15) mV variation when the supply changes from 2.0V to 3.0 V at room temperature.The power dissipation was less than 0.2-mW at 2.5 V supply voltage.The simulated results of this circuit using Eldo of Mentor Graphics Corporation showed that the temperature coefficient was about 19-ppm/℃.

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What this paper is about

A high-precision and low temperature coefficient CMOS bandgap reference voltage source was presented.Prototype of the circuit was simulated using charted 0.35 μm CMOS process.The power supply was 2.5 V.The output reference voltage exhibited(915.4±0.15) mV variation when the supply changes from 2.0V to 3.0 V at room temperature.The power dissipation was less than 0.2-mW at 2.5 V supply voltage.The simulated results of this circuit using Eldo of Mentor Graphics Corporation showed that the temperature coefficient was about 19-ppm/℃.

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Available abstract

A high-precision and low temperature coefficient CMOS bandgap reference voltage source was presented.Prototype of the circuit was simulated using charted 0.35 μm CMOS process.The power supply was 2.5 V.The output reference voltage exhibited(915.4±0.15) mV variation when the supply changes from 2.0V to 3.0 V at room temperature.The power dissipation was less than 0.2-mW at 2.5 V supply voltage.The simulated results of this circuit using Eldo of Mentor Graphics Corporation showed that the temperature coefficient was about 19-ppm/℃.

Key concepts: Bandgap voltage reference, Voltage reference, Temperature coefficient, Line regulation, Voltage, CMOS, Materials science, Power supply rejection ratio

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