The power-down sequence is the reverse order of the previous power-up sequence. During the power-down sequence, VDD and VDDI must be supplied until after VBIAS, VRESET, and VOFFSET are discharged to within 4 V of ground.
During the power-down sequence, it is a strict
requirement that the voltage difference between
VBIAS and VOFFSET must be within the specified
limit shown in Recommended Operating Conditions.
During the power-down sequence, there is no requirement for the relative timing of VRESET with respect to VBIAS and VOFFSET.