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Forum Post: RE: AFE4300EVM-PDK: Questions Regarding AFE4300 for BCM Measurement

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Hi Katelyn, Do you have any feedback? I managed to find a few answers to my questions but, i still have questions about the chip. Especially about calibration and test impedances. I would like to know why an external amplifier circuit is used in the AFE4300 EVM kit schematic at the BCM receive channel. How was the test impedances and calibration loads chosen? I'll be using the chip for EIT (Electrical Impedance Tomography) in FWR mode, the differential inputs and outputs will be multiplexed between 16 channels. It is quite a bit of pcb traces. Kind regards

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