Abstract
This work proposes an architecture of a programmable conditioning circuit for dc level adjustment and gain programming to be implemented for systems on chip. The conditioning circuit is developed using a methodology to minimize the number of passive components used for programming the gain guaranteeing the full measurement range. The circuit is designed using the switched capacitors technique with two gain stages, for a total gain varying from one to 512. It can operate in four different modes, single-ended with or without dc level adjustment, differential, and calibration. Simulation results are presented for the schematic and for the circuit extracted from the layout.
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