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Difference between pseudo differential and differential ADC

Question asked by arocklife on Jan 9, 2012
Latest reply on Jan 12, 2012 by arocklife

Hello everybody,

 

I'm facing some existential questioning and I'd be happy and relieved if someone come along with me in my quest.

 

I'm using the AD7451 a 12 bit pseudo differential ADC in my design to better cancelation of common mode noise as my sensing and processing functions are on two separate boards.

 

I now want to change to an AD7450 the differential version to convert a differential signal. Here is my question. How come one is differential and other fully differential while their respective datasheets show the same internal structure?

 

http://www.analog.com/static/imported-files/data_sheets/AD7450.pdf

http://www.analog.com/static/imported-files/data_sheets/AD7441_7451.pdf

 

Thank you guys.

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