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首页> 外文会议>Electronics, Circuits and Systems, 2001. ICECS 2001. The 8th IEEE International Conference on >Fully differential CMOS programmable analogue sensor interface based on fully differential multiple differences amplifiers
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Fully differential CMOS programmable analogue sensor interface based on fully differential multiple differences amplifiers

机译：基于全差分多差分放大器的全差分CMOS可编程模拟传感器接口

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摘要

A new fully differential programmable CMOS analogue interface for data acquisition in smart sensor microsystems is proposed. The architecture of this analogue front end comprises three fully differential modules where topology is based on a new fully differential multiple differences amplifier cell. This sensor interface includes a multiple input instrumentation amplifier with variable gain, a biquadratic low-pass anti-aliasing filter with tuneable cut-off frequency, and an optional fixed gain multi-input differential voltage amplifier. Each module is described, with special focus on the procedures for automatic calibration and adjustment of voltage gain and offset and cutoff frequency. Simulation results of the developed modules are presented and discussed. Finally some advantages of this structure are pointed out.
机译：提出了一种用于智能传感器微系统中数据采集的新型全差分可编程CMOS模拟接口。该模拟前端的体系结构包括三个全差分模块，其拓扑结构基于新的全差分多差分放大器单元。该传感器接口包括一个具有可变增益的多输入仪表放大器，一个具有可调截止频率的双二次低通抗混叠滤波器，以及一个可选的固定增益多输入差分电压放大器。描述了每个模块，特别着重于自动校准和调整电压增益以及失调和截止频率的过程。介绍并讨论了所开发模块的仿真结果。最后指出了这种结构的一些优点。

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