Difference between revisions of "MOS Transistors"

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Transistor models enable us to describe and predict the behavior of the circuits we build using these transistors by:
 
Transistor models enable us to describe and predict the behavior of the circuits we build using these transistors by:
 
* Providing us with a window into the physical device characteristics (e.g. dimensions, material and device properties, etc.) and processes (e.g. drift/diffusion currents, tunneling, charge transfer, etc.), and  
 
* Providing us with a window into the physical device characteristics (e.g. dimensions, material and device properties, etc.) and processes (e.g. drift/diffusion currents, tunneling, charge transfer, etc.), and  
* Allowing us to perform easy to do "experiments" using simulators such as SPICE<ref>https://en.wikipedia.org/wiki/SPICE</ref>.
+
* Allowing us to perform easy to do "experiments" using simulators such as SPICE<ref>SPICE (Simulation Program with Integrated Circuit Emphasis) https://en.wikipedia.org/wiki/SPICE</ref>.
  
 
=== Levels of Abstraction ===
 
=== Levels of Abstraction ===

Revision as of 11:19, 14 August 2020

Analog circuits are generally sensitive to the nuances and details of transistor behavior, requiring precise and/or well-controlled voltages, currents, etc. Digital circuits, on the other hand, can have much larger margins of error due to their inherent noise margins and regenerative properties. Thus, we want to be able to model these nuances and details of transistor behavior in order to predict their effects on our circuits.

Transistor Models

Transistor models enable us to describe and predict the behavior of the circuits we build using these transistors by:

  • Providing us with a window into the physical device characteristics (e.g. dimensions, material and device properties, etc.) and processes (e.g. drift/diffusion currents, tunneling, charge transfer, etc.), and
  • Allowing us to perform easy to do "experiments" using simulators such as SPICE[1].

Levels of Abstraction

References

  1. SPICE (Simulation Program with Integrated Circuit Emphasis) https://en.wikipedia.org/wiki/SPICE