Pls send the AD8428 & AD8275 SPICE model to me.
Message was edited by: Andy Rose - Removed personal email address.
Unfortunately, we don't have SPICE models available for the products you have mentioned. Here's a thread with a helpful link to a close equivalent.
Multisim Component Evaluator Analog Devices Edition Version 11.0.2
AD8476 SPICE Macro-model, ADI rev A; 05/2012
SPICE Netlist Error in schematic RefDes 'u1', element 'xu1': Not enough nodes found