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Re: Common centroid
Hello, i don't understand what mean "the ratio in interger number:7 or 8, not 7.5!"
and below is the overall circuit, which transistor need to do matching ???
How to see which transistor need to match ??? any rules ???
If PMOS can not match with NMOS, any method to match...
Re: Common centroid
Please see below picture, M1 & M2 is very large(66u/0.8u) and
M8 (2.4u/0.8u) & M12 (1.2u/2.4u) is much smaller,
When we do the layout, do we use the Common centroid Method
so that M1 & M2 divide into a few part to match M8 & M12 ???
Re: Common centroid
oh ~ i have a problem is:
If i have a PMOS1 and the ratio(W/L) is 66u/0.8u ,
NMOS2 14u/0.8u, PMOS2 2.4u/0.8u,
the size of PMOS is very very large compare with PMOS2,
can i use Common centroid method the match the size ???
thanks !
Re: Resistor Problem !
What is the function of "multiples of 3 or 4" ?
Added after 3 minutes:
I'm afraid that using MOS transistor to replace the resistor will affect
the bias current. Will that change the bias current ??? thanks !
Re: Resistor Problem !
Thank ! I'm doing a analog design and using Cadence GPDK Technology,
In the manual, the sheet resistance table only show:
Layer (in ohm/square)
Poly 7.5
N+ Diffusion 300
Metal 1 0.1
Metal 2...
Resistor Problem !
Hello, I'm a new hand of IC design,
I want to ask the question is,
Can I lay a 40Kohm resistor ??? Is it possible/suitable ?
Because I find that the process sheet resistance of Poly is 7.5 ohm/square ,
N+ Diffusion is 300 ohm/square.
Are the layout will very very large ...
manchester vhdl
Hello, I want to use NRZ(non return to zero) for input,
then convert to Manchester code, how can i write this program ???
any reference ? thanks !
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