Other Parts Discussed in Thread: ADC3444, DAC3162EVM
I have a customer asking the following about the ADC3444EVM:
The ADC3444 is connected with a TSW1400 board to receive a pattern of sine wave (fixed frequency, fixed amplitude), as source onto the input of the ADC. This input varies from 0.1 to 1 full-scale of the ADC.
The captured ADC data is then post-processed in Matlab to extract the phase information. We expect a constant averaged phase value from each pattern and that does NOT seem to be the case we are experiencing here.
Note: p10 and FS are 0.1x FS and 1x FS, respectively. X-axis power input vs. Y-axis measured phase value (independent of the input signal amplitude).
Please provide any insight into the issue we are experiencing and advise any possible experimental test method.
I have a report that the customer produced, but I cannot post it on the WEB. Please let me know where I can send it.
Thanks for your help with this!
Richard Elmquist.