Is it possible to use one AD55x7 DAC as reference source for second one to produce higher bit resolution? What drawbacks this solution may have?
That is an interesting thought. Are you planning on a full +/- Vref input +/- Vref 2x output? In theory, this is possible but this is not usually done in practice. Cascading two DACs has their own drawbacks:
If you would share your application or motivation for a higher resolution DAC, we may be able to recommend a proper DAC that would match your application needs.
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