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pgethea
Joined: 05 Nov 2009
Posts: 26
Location: Lexington, MA
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 Posted: Thu Nov 05, 2009 9:36 pm Post subject: AD531D chips? what are they? |
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Hi guys,
I came across an stash of chips and some of them look interesting, I am hoping you guys can help me identifying what they are and if they have any value.
They are ceramic/gold looking, have a P on the left side and AD531KD 7912 on the front and Mexico on the back. See picture below.
Any and all information is appreciated.
Thanks. |
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Chiefish
Joined: 23 Sep 2007
Posts: 1190
Location: Northwest N.J. U.S.A
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| Posted: Thu Nov 05, 2009 9:38 pm Post subject: |
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Analog devices
AD531KD
Analog Multiplier-Squarer - 4 Quadrant,Mult Error +/-1%
Analog Devices
Nom. Supp (V)=30
Status=Discontinued
Package=TO-116
Pins=14
Military=N
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"Technological progress is like an axe in the hands of a pathological criminal." A.E.
Check out my collection at http://www.chiefish.com/ |
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hugo929
Joined: 27 Oct 2006
Posts: 3203
Location: GALAXY
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pgethea
Joined: 05 Nov 2009
Posts: 26
Location: Lexington, MA
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| Posted: Thu Nov 05, 2009 9:42 pm Post subject: |
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| Do these have any value to anyone? |
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Chiefish
Joined: 23 Sep 2007
Posts: 1190
Location: Northwest N.J. U.S.A
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| Posted: Thu Nov 05, 2009 9:45 pm Post subject: |
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I dont think so really maybe a couple dollars or so. 
_________________
"Technological progress is like an axe in the hands of a pathological criminal." A.E.
Check out my collection at http://www.chiefish.com/ |
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