CMOS Inverter: VIC for KP=-0.5, KN=1.2, VDD=5V

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Discussion Overview

The discussion centers around calculating the input cross-over voltage (VIC) for a CMOS inverter using specified parameters for PMOS and NMOS transistors, including their transconductance parameters (KP and KN), threshold voltages (VTN and VTP), and supply voltage (VDD). The context appears to be homework-related.

Discussion Character

  • Homework-related

Main Points Raised

  • One participant requests assistance in finding the input cross-over voltage VIC, given the parameters of the CMOS inverter.
  • Another participant emphasizes the need to adhere to forum rules regarding posting homework problems.
  • Several participants express uncertainty about the formulas needed to solve the problem, suggesting that knowledge of Kirchhoff's voltage law (KVL) and Kirchhoff's current law (KCL) is necessary.
  • A participant recommends that those seeking help should refer to their textbooks or acquire one if they do not have access to one.

Areas of Agreement / Disagreement

There is no consensus on how to approach the problem, as participants express uncertainty about the necessary formulas and the appropriateness of posting homework questions in the forum.

Contextual Notes

The discussion highlights a lack of clarity regarding the specific formulas required for the calculation, as well as the implications of the forum's rules on homework assistance.

Silverlining
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A CMOS inverter is built using a PMOS transistor with KP = - 0.5 mA/V2 and KN = 1.2 mA/V2. If VDD = 5V, VTN = 1.0V, and VTP = - 1.2V, find the input cross-over voltage VIC.
 
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Silverlining said:
A CMOS inverter is built using a PMOS transistor with KP = - 0.5 mA/V2 and KN = 1.2 mA/V2. If VDD = 5V, VTN = 1.0V, and VTP = - 1.2V, find the input cross-over voltage VIC.

Please read the rules about how to post homework problems.
 
If i knew which formulas to use i could easily do this... the rest is simply kvl and kcl
 
AGAIN ... please read the rules about how to post homework problems.
 
Silverlining said:
If i knew which formulas to use i could easily do this... the rest is simply kvl and kcl

I recommend you read your book. If you don't have a book, I recommend you acquire one somehow. Perhaps, you could buy one, rent one, or check one out at a local library.
 

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