A reference device for Lightly Doped Drain (LDD) Layer

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Rams94

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I am trying to use a p-type LDD layer for my design, but I cannot find any devices using the LDD layer in the library. I guess it is a derived layer.
I wonder if there is any device I can refer to?
 

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Rams94 said:
I am trying to use a p-type LDD layer for my design, but I cannot find any devices using the LDD layer in the library. I guess it is a derived layer.
I wonder if there is any device I can refer to?
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FYI, I am using the TSMC 65nm process.
 

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You may have to draw your own. There aren't many useful devices you can make. Poly is a hard mask so you can't make a LDD MOSFET. Too thin a layer, probably, to make a top gate JFET although you could make a back gate one (with front oxide meddling maybe).

Recommend you start with the mask fab Booleans to see how it's made, and if you're lucky your CAD platform has a utility to take a layout and give you mask logic layers to inspect.

It may be that a resistor is the best you can do. Hey, it's still a device.
 

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