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2012•International Conference Mixed Design of Integrated Circuits and SystemsRequires access

A low noise low offset current mode instrumentation amplifier

Andriana Voulkidou, Stylianos Siskos, Theodoros Laopoulos

Open publisher page 6 citations

Abstract

This paper presents a low noise current mode instrumentation amplifier for low frequency temperature sensing applications. The circuit utilizes a positive second generation current conveyor (CCII+) as a basic building block. Nested chopping technique is used to totally cancel output offset voltage and eliminate 1/f noise. The amplifier is designed in 0.18µm CMOS process. Post-layout simulations on the extracted circuit net-list provide an equivalent input referred noise of 20nV/√Hz, a 0.582µV offset and a CMRR of 110dB. The power consumption is 420µW at ±1.65V.

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What this paper is about

This paper presents a low noise current mode instrumentation amplifier for low frequency temperature sensing applications. The circuit utilizes a positive second generation current conveyor (CCII+) as a basic building block. Nested chopping technique is used to totally cancel output offset voltage and eliminate 1/f noise. The amplifier is designed in 0.18µm CMOS process. Post-layout simulations on the extracted circuit net-list provide an equivalent input referred noise of 20nV/√Hz, a 0.582µV offset and a CMRR of 110dB. The power consumption is 420µW at ±1.65V.

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OpenAlex reports 6 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

This paper presents a low noise current mode instrumentation amplifier for low frequency temperature sensing applications. The circuit utilizes a positive second generation current conveyor (CCII+) as a basic building block. Nested chopping technique is used to totally cancel output offset voltage and eliminate 1/f noise. The amplifier is designed in 0.18µm CMOS process. Post-layout simulations on the extracted circuit net-list provide an equivalent input referred noise of 20nV/√Hz, a 0.582µV offset and a CMRR of 110dB. The power consumption is 420µW at ±1.65V.

Key concepts: Instrumentation amplifier, Input offset voltage, Electrical engineering, Low-noise amplifier, Y-factor, Electronic engineering, Amplifier, Offset (computer science)

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