Hi all,
In UG192 Xilinx proposes to use a MAX6043 Reference IC as a supply for the System Monitor section. But I couldn't take the System Monitor into operation, because the REF- Voltage reached only 2.0 V, although the supply current was roughly 7mA and therefore lower than the maximum value of 10m amps from the MAX6043.
I solved this issue by replacing the MAX6043 by a MAX6033 (same package, lower precision, higher source current of 10 mA).
Do you have any idea what's going wrong?
Ed