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analog IC Interconnect material composition

 
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layout_designer



Joined: 09 Jan 2006
Posts: 88
Helped: 8


Post06 Feb 2006 7:14   analog IC Interconnect material composition

Hi
When a foundry says cu or al interconnect material, is it 100% cu or al or will there be an alloy of these metals? there is not much info about this composition in the pdk.

Any help in this please
thanks
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Hughes



Joined: 10 Jun 2003
Posts: 715
Helped: 85


Post07 Feb 2006 6:03   Re: analog IC Interconnect material composition

Usually it is a multi-layer structure.
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layout_designer



Joined: 09 Jan 2006
Posts: 88
Helped: 8


Post07 Feb 2006 10:20   Re: analog IC Interconnect material composition

Hi Hughes

when we connect a node of one transistor to some other component we use a metal and some vias to connect them. Apart from these are there any other layers?

what is the composition of these layers? are these layers made of single metal or alloys of one main metal like cu or al.

can u please elaborate.
thanks in advance
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