nonolith/CEE — Issue #25: current sense singularity
Author: itdaniher
Created: 2011-12-20 15:44:52+00:00
State: open
Labels: cee

The MAX9919 has a mathematical singularity at VCM = 2V, causing a nonlinear offset in current measurement.

Most of this should be solvable in software with an if.. tree for common mode voltage dependent offsets.

This problem only presents itself as a functional impairment sourcing current with a common mode voltage of almost exactly 2V.

This problem will be resolved in the next hardware iteration of the CEE.