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NMOSFET parameter extraction

by Aseth
Tags: extraction, nmosfet, parameter
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Aug13-14, 02:49 AM
P: 2
Hey! I'm doing a lab assignment and need some guidance.

i have measurement with L=1μmeter and w=10μmeter, but the id data is normalized to w=1μmeter, what does it mean?

do I need to get Ids "un-normalized" for extraction, like Ids*1e-6= new Ids

the second question is about low-field mobility, does the low-field mobility μ0 equal for all NMOSFETs? the BSIM guide Iam using have default value is 670 cm^2/Vsec for NMOSFET. but the extracted value is like 200cm^2/Vsec, I'm confused.

I dont know if this is the right sub-forum for posting those questions, please moderators change it to appropriate sub-forum if needed.

Thanks in advance
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Greg Bernhardt
Aug15-14, 07:13 PM
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I'm sorry you are not finding help at the moment. Is there any additional information you can share with us?
Sep7-14, 06:12 PM
P: 287
The general MOSFET equation is Id = mu Cox W/L ((Vgs-Vth) Vds - Vds^2/2). This is the W/L they are referring to.

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