What is the difference between
1.pplus_s
2.pplus_u
3.ppolyf_u
4.ppolyf_s
thanks!
I am using the chartered 0.18um library if it's any help. And how can I model to get the resistor characteristics... thanks! I would really appreciate if anyone can help or just help to rephrase the question cos I am not quite sure what I am asking is a valid question
I am sorry though I cannot seem to find any literature on what unsilicied and silicied means. ( I am terribly sorry, I am an undergrad who is really bad at engineering) could you point me out in the right direction as to which journal or book to read to have a better understanding? And would you know what is the difference between plus and poly?
nplus or pplus resistors use the resistance of doped regions with the same name, poly resistors use the polysilicon (gate) material; all are available unsilicided or silicided.
And all of them possess different TCs (temperature coefficients)!
A silicide is a compound that has silicon with more electropositive elements.Silicon is more electropositive than carbon. Silicides are structurally closer to borides than to carbides.
By defaults , all your poly and diffusion layers are silicided .. SAB is Silicide Area Block .... which blocks the Silicidation of poly or diffusion in that area.. thus giving more resistance per unit lenght as compared to silicided one....
SAB IS Silicide Area Block . WAT ABT SBLK IN ESD.SAB AND SBLK BOTH ARE SAME OR DIFFERENT. WAT ABT FUNCTIONALITY OF SAB AND SBLK IN RESISTOR N ESD .IS IT SAME
SAB IS Silicide Area Block . WAT ABT SBLK IN ESD.SAB AND SBLK BOTH ARE SAME OR DIFFERENT. WAT ABT FUNCTIONALITY OF SAB AND SBLK IN RESISTOR N ESD .IS IT SAME
sumtime they use different blocking layers like RPO for resistor and SAB for MOSFETs ( in ESD) /.. names really depends on foundry but basic functionality is same..
for more information about this layer you can refer your design rule document.