Hello, on page 9 of the datasheet of AD7195 says "NC. No connect. This pin should be tied to AGND". Why the EVAL board of AD7195 don´t connect this pins to AGND? They need to be connected to AGND or leave it unconnected?
Thanks, best regards.
"No Connect" means that the pin is not internally connected to the die. So, the pins can be left floating. Some customers do not like floating pins in their system. For this reason, the datasheet says to connect the pins to AGND. However, in practice, either tying them to AGND or leaving them floating is acceptable.
We're looking into this. We'll get back to you as soon as possible.
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