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AD7746 Calibration

Question asked by supershiye on Oct 27, 2015
Latest reply on Oct 28, 2015 by supershiye

I am working on a circuit design with AD7746. Now I am facing a problem is about the offset calibration. I write the register into calibration mode and when the calibration is done, the offset registers always shows zeros, like having never been calibrated. I also has an EVL-board, its calibration works well. Is that wrong to do calibration with connecting the capacitor? Or there is something special design in EVL-board?