[SOLVED] Please help to identify this vco

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albert22

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Hi,
please help me to identify this chip. I checked the connections and it seems to be a VCO similar to the MC1648.
The marking is 043A XARZ the logo is engraved but lacks definition and I cant identify either.

Here is the photo (sorry for the quality)
<a title="chip vco.jpg" href="http://obrazki.elektroda.pl/3854467100_1348347219.jpg"><img src="http://obrazki.elektroda.pl/3854467100_1348347219_thumb.jpg" alt="chip vco.jpg" /></a>

Thanks in advance
 

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I'd suggest it's a MC12034A which is a 2GHz prescaler and probably mounted very close to a VCO.
I have lots of '034A' devices just like the one pictured but with the Motorola logo on them. Newer devices than mine wll proably be branded 'on-semi'.

Brian.


 
betwixt.
You are entirely right. I was confused about the connections and what were I thought that were only varicaps there are at least one smd transistor.
I was wrong at the number too 043A instead of 034A it was good that you saw the photo.
Marked as helpful and closed
Many thanks
 
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