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System level modeling is applied to a recently proposed indirect current feedback (ICF) chopper instrumentation amplifier based on a Gm-C low pass filter architecture. The aim of the study is solving important limitations of the previous architecture in terms of output range and bandwidth-to-chopper frequency ratio. The possibility of obtaining a rail-to-rail input common mode range is also investigated...
An analytical approach to the design of compact CMOS chopper amplifiers for integrated thermoelectric sensors is presented. The impact of the high resistance and low signal bandwidth of thermopile sources on the design is illustrated. The proposed approach, regarding the precision vs noise tradeoff, is applied to the design of a practical prototype, using a commercial process. Accurate electrical...
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