Hi people.
I am given the table below with the following questions.
It asks me to find which of the following are NMOS and which are PMOS. my initial thinking was to use gm = WμCox (Vgs-Vt) / L
assuming that N mos were quicker because electron mobility was higher compared to that of holes. I used the data sheet to find that Ue = 1500 and Uh is = 450
I made a few assumptions the first being that Vt was 0.25Vds
can i ask when it says operation voltage = 2.5V, does that mean that Vgs = 2.5 or Vds = 2.5??? and if so what is the voltage on the top of the table??
I assume the transconductance gm in the table is gm / W because of its units however i have no idea what the S in the units are for and is mm milimetres? i assume not... i also know that gm is measured in mho.
anyways i put the numbers in and err well i got mobility = 0.0034 m^2/ Vs
which i think should equal 33 cm^2 / Vs
this doesnt = 450 or 1500?????
have i done something stupid??? any ideas????
Thanks for your help,
Lee.
I am given the table below with the following questions.
It asks me to find which of the following are NMOS and which are PMOS. my initial thinking was to use gm = WμCox (Vgs-Vt) / L
assuming that N mos were quicker because electron mobility was higher compared to that of holes. I used the data sheet to find that Ue = 1500 and Uh is = 450
I made a few assumptions the first being that Vt was 0.25Vds
can i ask when it says operation voltage = 2.5V, does that mean that Vgs = 2.5 or Vds = 2.5??? and if so what is the voltage on the top of the table??
I assume the transconductance gm in the table is gm / W because of its units however i have no idea what the S in the units are for and is mm milimetres? i assume not... i also know that gm is measured in mho.
anyways i put the numbers in and err well i got mobility = 0.0034 m^2/ Vs
which i think should equal 33 cm^2 / Vs
this doesnt = 450 or 1500?????
have i done something stupid??? any ideas????
Thanks for your help,
Lee.
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