I'm not able to get the AD637 spice model to converge in LTSpice. Has anyone modified the model? I"m willing to sacrifice accuracy in order to get a simulation to run.
Sorry, we don't support LTSpice. Please try using Multisim or Simetrix in simulating SPICE models of ADI.
You can download the SIMetrix in this link - http://www.analog.com/en/design-center/advanced-selection-and-design-tools/interactive-design-tools/adisimpe.html
Can you share your schematic? I could simulate your circuit in Multisim or SIMetrix if it's working and check if there's anything wrong with the SPICE model.