Re: can I use general DAC chip to replace multiplying DAC chip?

notstop@xxxxxxxxx wrote:

a non-multiplying DAC's output also can controlled by a reference
input voltage or digital code.
what is difference?

The big issues that I could see in a "regular" DAC that may keep it from performing like a multiplying DAC are:

1.  The performance may stink as the reference is brought down to zero.
2.  You may have a very fancy 2- or 4-quadrant multiplying DAC.
3.  The frequency response from reference to output may be disappointing.

All of these issues could be checked with careful perusal of data sheets, and possibly with experimentation.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
.