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New low voltage, high PSRR, CMOS bandgap voltage reference

Saleh Ashrafi, M. Atarodi, Mohammad Chahardori

Open publisher page 11 citations

Abstract

A new low voltage bandgap reference (BGR) in CMOS technology, with high power supply rejection ratio (PSRR) is presented. The proposed circuit uses a regulated current mode structure and some feedback loops to reach a low voltage, low power and high PSRR voltage reference. The circuit was designed and simulated in 0.18 um CMOS technology, with a power supply of 1.4 volt. The results show PSRR is 65dB at 1 MHz and the output voltage variation versus temperature (-40 to 140) is less than 0.1%. This circuit shows robustness against process variation.

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What this paper is about

A new low voltage bandgap reference (BGR) in CMOS technology, with high power supply rejection ratio (PSRR) is presented. The proposed circuit uses a regulated current mode structure and some feedback loops to reach a low voltage, low power and high PSRR voltage reference. The circuit was designed and simulated in 0.18 um CMOS technology, with a power supply of 1.4 volt. The results show PSRR is 65dB at 1 MHz and the output voltage variation versus temperature (-40 to 140) is less than 0.1%. This circuit shows robustness against process variation.

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OpenAlex reports 11 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

A new low voltage bandgap reference (BGR) in CMOS technology, with high power supply rejection ratio (PSRR) is presented. The proposed circuit uses a regulated current mode structure and some feedback loops to reach a low voltage, low power and high PSRR voltage reference. The circuit was designed and simulated in 0.18 um CMOS technology, with a power supply of 1.4 volt. The results show PSRR is 65dB at 1 MHz and the output voltage variation versus temperature (-40 to 140) is less than 0.1%. This circuit shows robustness against process variation.

Key concepts: Power supply rejection ratio, Bandgap voltage reference, CMOS, Voltage reference, Electrical engineering, Voltage, Dropout voltage, Materials science

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