Examples of stacking circuit has been posted on the ADR5045 data sheet. Please refer to Figure.21.
Figure 21a shows three ADR5045 devices configured to give 15 V.
I am curious about your application circuit. Why do you need the -0.5V? Having two independent references with 3 V and 2. 5 V can give you the -0.5 V between these two output nodes. I would say the design circuit would vary depending on your target applications.
Thank you for reply.
We will consider various even here with reference to the circuit that I got from you.
What supply voltages are available in your application? Reinhard's example above includes a -2.5V supply.
I use +5V and -5V as supplies.
I think Hara needs -0.5V in respect to ground and not as differential voltage.