Smallest [pincount] Xmega with DAC

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I think I got this right but I better check with the experts.

The ATXMEGA16A4U-AU seems to be the smallest Xmega with both ADC and DAC. Also USB and possibly correctly working ADC and DAC.

The ATXMEGA16A4-AU seems the same but no USB and for some reason more expensive?

I would have gone for the non USB type as I don't need it but not if it is more expensive. :roll:

John Samperi

Ampertronics Pty. Ltd.

www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

Last Edited: Wed. Nov 7, 2012 - 09:45 PM
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ATXMEGA16A4U-CU is a good deal smaller (almost 50%). Even more so when you factor in the footprint differences.

As for the A4U vs A4, I think Atmel has unofficially deprecated them. The A4U have all the same features as the A4, without the nasty errata.

If you're thinking of using the analog peripherals, use the A4U (regardless of price). It's not worth the hassle to try to work around the errata on the A4.

EDIT: shouldn't this be in the xmega forum?

Jeff Nichols

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What do you mean by "smallest"?

How many are you going to build?

Once you decide what is the "smallest" model, is it readily available to common folk?

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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Quote:
use the A4U (regardless of price)
I LIKE the price, they are cheaper than the A4! :-)
Quote:
What do you mean by "smallest"?
Not necessarily PHYSICAL size but in pin numbers, the ones I mentioned above are 44pin devices (and yes I want TQFP).
I don't see a 32 pin Xmega as that would still be sufficient.
Quote:
How many are you going to build?
If I tell you then I would have to kill you.....let's say into the thousands eventually.

John Samperi

Ampertronics Pty. Ltd.

www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

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js wrote:
Quote:
use the A4U (regardless of price)
I LIKE the price, they are cheaper than the A4! :-)

Regardless goes both ways. My point was that even if you find A4 parts for less (and I imagine there will come a time when distributors try to unload their A4 stock in favor of the A4U), you'll save yourself a lot of analog heartache by using the A4U instead.

I'm 99% certain that the 44/49 pin devices are the smallest. I've certainly never seen any smaller, but Atmel's site isn't exactly the easiest to navigate.

Jeff Nichols

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Edited thread title to make it clearer what I meant.

Moving to the Xmega forum, don't know if it will be better there.

John Samperi

Ampertronics Pty. Ltd.

www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

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The 'A4/ 'A4U series are the lowest pincount series having both peripherals .

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