I am using the AD5762R in a design and have them populated on 4 boards. The output range should be +/-10V, but on 3 of these I get a limited range of -10V to ~+7.5V on both A&B channels. The DAC on the 4th board works properly. These were all bought together, probably came from the same lot. 2 of the DACs have these markings:
I do not have access to the other 2 to see if they have identical markings. Is there a known issue or a configuration step that I am overlooking?
I did find the problem after thinking about your question about connected loads. I have the outputs connected directly to op amps, adding minimal load, but the ISCC pin on the DAC (programmable short-circuit current protection) had a 120K resistor to ground connected. This was limiting the current to 500μA. I removed this resistor so that the DAC would default to a 5mA limit and this solved the problem. BTW, you also mentioned the point of purchase for the parts; they came from Digi-Key Thanks for your response to my questions.