High-Speed ADCs

Q&A AD9219: Contradicting information about the speed grade

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AD9219: Contradicting information about the speed grade

Cedeteg on Sep 17, 2014

We ordered some AD9219 in the 65MSPS variant.

The labels on the devices read "ABCPZ-65".

But the speed grade register has the value "0x01", which according to the manual means 40MSPS.

So how can we find out definitely which version we have?

0 JudyChui

on Sep 18, 2014 7:23 AM over 6 years ago
Hi Gerd,

This certainly sounds strange. I will look into it to see if there is a mix up somewhere, and get back to you as soon as I can. Sorry for the inconvenience.

Judy
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0 DougI

on Sep 23, 2014 9:27 PM over 6 years ago
Hello,

I believe you have the 65MSPS version. According to the datasheet, the first 4-bit nibble contains the speed grade information. As such, Register 0x02 = 0x01 indicates the 65MSPS device.

Thank you for considering the AD9219.

Doug
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0 Cedeteg on Sep 25, 2014 5:02 AM over 6 years ago

Thank you.

The LSB is indeed irrelevant for the speed grade information.
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