Reading data of LTC2122 ADC

The LTC2122 has a JESD204B interface, the data out lines need to go into an FPGA with a JESD204B decoder and then you can read the data.  The ADC should not work with 0-5V applied, you will rail the analog input.  The OF+/- pins are an overflow detection circuit that are high when the input is over ranging, it has nothing to do with the JESD204B serial stream. 

Thank you Clarence I understand your point. The ADC is being read the same way you have mentioned. The input 0-5 has been railed for the input to ADC in range 

I am refering to the figure 11 and figure 12 in which the word formed is 16 bits. Now I want to perform the some computation on data should I consider the MSBs or LSBs in calculation

I am confused as this is 14 bit ADC but I receive the 16 bits

I will be highly grateful for your help

Best Regards

Uzmeed

You can see that the 16 bit word consists of 14 data bits, the overflow bit, and a 0  so when the FPGA decodes the serial stream that is the 16 bit word you should look for:

I don't understand what you mean by "Now I want to perform the some computation on data should I consider the MSBs or LSBs in calculation"  yes you should use all of the bits when you are doing calculations on the data. 

Thank you now I got it where the overflow and the 0 bit is.

Now if I want to compare the value of 2 ADCs what I understand is that the LSB of 16 bit word that is zero should not be considered

OF is a flag that shows whether the output has overflown or not

ans the computation is to be performed on bit 2-16 of the 16 bit word

Am I right ??

Yes, the lowest 2 bits of the two words are OE and zero, they are not codes in the ADC.

Yes, the lowest 2 bits of the two words are OE and zero, they are not codes in the ADC.