I have a circuit that uses an AD9281
If I connect VREF/2 to both inputs I should get code 128 out.
For channel 1 I am getting 128 + 16 and for channel 2 I am getting 128 + 32
VREFB is 1 volt and VREFT is 2.5 volts
I suspect something wrong wit VREFT as I think it should be 2 volts not 2.5 volts.
Any advice would be appreciated.
VREF is 2 volt exactly.
Moved to its proper community High-Speed ADCs.
This appears to be a duplicate posting to multiple support communities which has since been resolved in https://ez.analog.com/data_converters/high-speed_adcs/f/q-a/116286/strange-things-with-ad9281