v.srinivas
Newbie level 4
SAB layer
what is role of SAB layer in resistor layout, if iam not drawn what happens
what is role of SAB layer in resistor layout, if iam not drawn what happens
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ccw27 said:So for reliable resistance you should use salicide resistor? What is non-salicide resistor used for?
Thanks
Just to clear this misunderstanding:pbs681 said:the purpose of the SAB layer is to reduce resistance.
Just to clear this misunderstanding:
The purpose of the SAB layer is to not reduce the resistance!
The SAB layer blocks the salicide - as mentioned above - hence these salicide-blocked areas will keep their original high resistance!
So for reliable resistance you should use salicide resistor? What is non-salicide resistor used for?
Thanks
the purpose of the SAB layer is to reduce resistance. This technolgy is normally used in <0.18 tech. This is because as tech scaled down, the need of low resistance path become important because the signal getting faster.
In silicide tech all layers will be coated by silicide layer except for the layers that we don't want it to be low resistance for instance resistor structure.
By placing a SAB layer, we are making the resistor without silicidation over actice areas. So placing SAB means it is a non-salicide resistor.
regards,
santhosh