DS90UB926Q-Q1: Do we have DS90UB926Q-Q1 Pspice or TINA model for simulate ?

Hello Kygo,

1) You can find and/or request the Model here.

2)  It depends what the customer want to test! So the customer should define what they want to test, and use the max/min specs listed in the data sheet.

For general information please refer to this document. 

Also you can have a look into this thread.