用于电流传感的低增益误差仪表放大器

2010 IEEE International Conference of Electron Devices and Solid-State Circuits (EDSSC) Pub Date : 2010-12-01 DOI:10.1109/EDSSC.2010.5713692

Jiongming Wang, Fuding Ge, Shengqi Yang, Xinnan Lin, Jin He

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引用次数: 4

摘要

介绍了一种低增益误差伪轨间间接电流反馈仪表放大器的设计。为了减小输入共模电压变化带来的增益误差，采用了由特殊设计的折叠级联放大器调节的MOS晶体管。当输入共模电压为半VDD至VDD时，模拟增益误差仅为0.2%左右。

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Low gain-error instrumentation amplifier for current sensing

This paper presents the design of a low gain-error pseudo rail-to-rail indirect current feedback instrumentation amplifier (In-Amp). In order to reduce the gain error introduced by the input common mode voltage variations, MOS transconductors regulated by specially designed folded-cascoded amplifier are used. Simulated gain error is only about 0.2% with input common mode voltage ranging from half VDD to VDD.

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来源期刊

2010 IEEE International Conference of Electron Devices and Solid-State Circuits (EDSSC)

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