用于生物医学应用的低偏置仪表放大器

2017 International Conference on Circuits, Controls, and Communications (CCUBE) Pub Date : 2017-12-01 DOI:10.1109/CCUBE.2017.8394168

R. Nagulapalli, S. Raparthy, A. Venkatareddy

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引用次数: 5

摘要

介绍了一种适用于生物医学应用的低功率、高输入参考偏置仪表放大器(IA)。它在运放和共模之间使用一个中间缓冲晶体管来改善偏置。样机具有82dB差分增益和110dB低频CMRRand共模输入范围为0.5 ~ 1.1V。采用45纳米CMOS技术开发了一个原型，并使用Spectre进行了仿真。仿真结果表明，该失调电压为0.5mV，比现有架构提高了3倍。该电路从1.5V电源消耗6.75uW，占用0.00325mm2硅面积。

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A low offset instrumentation amplifier for biomedical applications

In this paper a low power, superior input referred offset Instrumentation amplifier (IA) suitable for biomedical applications has been described. It uses an intermediate buffering transistor between the opamp and common mode to improve the offset. A prototype of 82dB differential gain and 110dB low-frequency CMRRand common mode input range of .5 to 1.1V.A Prototype has been developed in 45nm CMOS technology and simulated with Spectre. Simulation results shows that the 0.5mV offset voltage and 3x improvement compared to the existing architecture. The circuit consumes 6.75uW from 1.5V supply and occupying 0.00325mm2 silicon area.

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2017 International Conference on Circuits, Controls, and Communications (CCUBE)

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