Docsity
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Docsity AI
Docsity AI
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search for your university

Find the specific documents for your university's exams

Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

SPICE Model Parameter Calculation for CS Design Example, Assignments of English

English

The steps to calculate spice model parameters for a given cs design example using mathcad. It includes the calculation of various parameters such as tox, cox, and w, as well as the determination of the optimal capacitance value for maximum frequency (ft) by minimizing the inductor value.

Typology: Assignments

2020/2021

Uploaded on 01/09/2021

ahmed-zakaria-bashiti
ahmed-zakaria-bashiti 🇵🇸

10 documents

1 / 1

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
C:\Users\Bernhard Boser\Dropbox
\iPad\105\assignments\HW11.mcd 10/31/2012 Page 1 of 1
kpn nCox
 kpn 400 A
V2
Vdsat 2 fT
L2
n
 Vdsat 254.469mVmin
current
gm
ID
2
VGS VTH
=IDgmVdsat
2
 ID127.235Amin
finally, get W:
ID1
2n
Cox
W
L
VGS VTH

2
=
W2I
D
L
Vdsat2n
Cox
 W 1.768mW
L9.824
SPICE model parameter calculation:
o8.854 pF
m
r3.9 Cox or
tox
=tox ro
Cox
 tox 3.453nm
Reference:C:\Users\Bernhard Boser\Documents\Files\Lib\MathCAD\Default\defaults.mcd
L17: CS Design Example
CS with Rs
avo 10 RL10k Rs5M BW 10MHz
gmavo
RL
 gm1mS
BW 1
2 Rs
CGS
=CGS 1
2 BWRs
 CGS 3.183fFmax!
fT1
2
gm
CGS
 fT50GHzmin! choose minimum L to maximize fT: L 180nm
get fT from measurements (or SPICE). Approximation:
fT1
2
VGS VTH

L2
=
n400 cm2
Vs
 Cox 10 fF
m2


Partial preview of the text

Download SPICE Model Parameter Calculation for CS Design Example and more Assignments English in PDF only on Docsity!

C:\Users\Bernhard Boser\Dropbox \iPad\105\assignments\HW11.mcd

10/31/2012 Page 1 of 1

kpn  n C (^) ox kpn 400

A

V 2

V (^) dsat

2   fT L 2 n

 V (^) dsat  254.469 mV min

current

gm ID

V GS V TH

= ID

gm V (^) dsat 2  ID  127.235 A min

finally, get W:

ID

 n C (^) ox

W

L

=   V GS V TH^2

W

2  IDL

V (^) dsat^2  nC (^) ox

 W  1.768 m

W

L

SPICE model parameter calculation:

o 8. pF m  r  3.9 C (^) ox

o r tox = tox

r o C (^) ox  tox 3.453 nm

Reference:C:\Users\Bernhard Boser\Documents\Files\Lib\MathCAD\Default\defaults.mcd

L17: CS Design Example

CS with Rs

avo  10 R (^) L  10k R (^) s  5M BW 10MHz

gm

avo R (^) L  gm 1 mS

BW

2   R (^) sC (^) GS

= C GS

2   BWR (^) s

 C (^) GS  3.183 fF max!

fT

gm C (^) GS   fT  50 GHz min!^ choose minimum L to maximize fT:^ L 180nm

get fT from measurements (or SPICE). Approximation:

fT

  V GS V TH

L 2

n 400 cm^2 V s   C (^) ox 10 fF m