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A SiGe BiCMOS operational amplifier with 48dB of gain and 9GHz unity gain bandwidth

A Hart, Sorin P. Voinigescu

Open publisher page 3 citations

Abstract

In this paper, we presents the design and implementation of a BiCMOS operational amplifier topology that operates from a 2.5 V supply and achieves record gain-bandwidth performance. First, a fully-differential, single stage folded-cascode with tunable common-mode feedback is described. In order to improve the DC gain of this circuit, a second version is implemented with differential gain boosting and achieves 48 dB of gain while maintaining a unity gain bandwidth of 9 GHz.

About this research paper

What this paper is about

In this paper, we presents the design and implementation of a BiCMOS operational amplifier topology that operates from a 2.5 V supply and achieves record gain-bandwidth performance. First, a fully-differential, single stage folded-cascode with tunable common-mode feedback is described. In order to improve the DC gain of this circuit, a second version is implemented with differential gain boosting and achieves 48 dB of gain while maintaining a unity gain bandwidth of 9 GHz.

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OpenAlex reports 3 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

In this paper, we presents the design and implementation of a BiCMOS operational amplifier topology that operates from a 2.5 V supply and achieves record gain-bandwidth performance. First, a fully-differential, single stage folded-cascode with tunable common-mode feedback is described. In order to improve the DC gain of this circuit, a second version is implemented with differential gain boosting and achieves 48 dB of gain while maintaining a unity gain bandwidth of 9 GHz.

Key concepts: Fully differential amplifier, Gain–bandwidth product, Cascode, Open-loop gain, Operational amplifier, High-gain antenna, BiCMOS, Bandwidth (computing)

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