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wepwawet
Joined: 18 Mar 2004
Posts: 3019
Location: Seligenstadt - Germany
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 Posted: Sun Apr 13, 2008 3:30 pm Post subject: dac die, very nice |
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it was already in the junkbox when the lid broke and showed what's underneath:-)
as the lid was a full size i didn't realize it was a lid.
I thought the chip to be a d-package...
so now it goes into my curiosity-cabinet (if this german idiom works in english:-/ |
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Chiefish
Joined: 23 Sep 2007
Posts: 2153
Location: Northwest N.J. U.S.A
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| Posted: Sun Apr 13, 2008 3:45 pm Post subject: |
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That looks pretty cool, i wonder what the tiny core on the right middle does?
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"The only reason for time is so that everything doesn't happen at once." A.E. |
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el_gecko
Joined: 25 May 2005
Posts: 1553
Location: Nice, France
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| Posted: Sun Apr 13, 2008 5:41 pm Post subject: Re: dac die, very nice |
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| wepwawet wrote: |
(if this german idiom works in english:-/ |
I don't know but it works in french 
I'm surprised by this core, it looks pretty nice.
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My microprocessor collection: The Gecko's CPU Library |
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JAC
Joined: 24 Jul 2005
Posts: 3469
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| Posted: Sun Apr 13, 2008 5:47 pm Post subject: |
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| Awesome! |
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chip68
Joined: 19 Oct 2004
Posts: 1024
Location: Central Pennsylvania
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| Posted: Sun Apr 13, 2008 10:43 pm Post subject: |
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| Chiefish wrote: | | i wonder what the tiny core on the right middle does? |
It's the feedback resistor that determines output voltage versus DAC current. It's kept thermally isolated to prevent errors due to temperature gradients within the DAC itself (the larger die).
- CMW |
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Mon Apr 14, 2008 7:17 am Post subject: |
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| Indeed, it's the feedback resistor, between pins 17 and 21: |
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