Hello everybody.
Two years ago i have a project with AD7730 A/D converter. It was a DC weigh scale, later i did it with a switch regulator from Micrel MIC4427. So everything was fine. Now i have a project with ADuC824/834 and the results from the A/D converter (which AD claims is the same as 7730 in general) are at least 5 times worst than those i've had with AD7730.
So can anybody, who have worked with these chips, can tell me is this a problem with ADuC824/834, ot may be it's a problem with poor grounding and design of the board? Do you know links related to information about this problem?