Try other setting : single ended, Vssa - Vdda. Anyway, it is unlikely there will be 5V exactly (the output won't reach the compliance voltage). One option would be using IDAC with external resistor (instead of VDAC) and slightly rising Vdda (5.1-5.2V) if possible.
but i IDAC available in some selected ic. i working on CYC824423A, CYC827443.
is that IDAC available in this ic?
If you have VDAC8, then you have IDAC8 also