rawbus
Member level 1
I'm using the eval kit TI ADS62P22, 12 bit 65 MSPS. I'm running it off the internal reference common mode which is listed as 1.5 V and a REFT as 2 and a REFB as 1. The problem I have is I don't understand the numbers I get from the input signal. They look like the input signals in shape and frequency when I plot the data on a line graph; but, I change the frequency and the numbers get higher which doesn't make sense to me. All the equations I've seen are just Vref/resolution. I don't really see how the frequency affects this. Is my test signal at 1-2V sine wave not right to use or is there something that I'm missing?
Added after 12 minutes:
This would be a frequency change from 100KHz to 400KHz.
Added after 12 minutes:
This would be a frequency change from 100KHz to 400KHz.