I, too, don't know the reason (and hope to get additional) why the
company designer designed it in such a way.

-----Original Message-----
From: Pete Houwen [mailto:[log in to unmask]] 
Sent: Wednesday, 7 July 2010 9:56 PM
To: [log in to unmask]; Tan Geok Ang
Subject: Re: QFN pads design-QPI-3

Because someone is thinking too much?  

I can see a pin one (orientation) difference, but I can't imagine any 
mechanical or electrical reason to change pads because of their shield
GND 
connection.  And under an LGA, I'd much prefer just a chamfered corner
than 
an oversized homeplate orientation pad.

Not an LGA fan to begin with, ideas like this don't make me feel any
better 
about them.

Pete


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