Stats

  • Replies 1
  • Subscribers 24
  • Views 5556
  • Members are here 0
More Content

How to model a voltage-controlled resistor in PSpice?

AyushD

Analog Behavioral Modeling (ABM) can be used to model a nonlinear resistor using tables and expressions which describe resistance. Here are some examples.

If a Resistance vs. Voltage curve is available, a look-up table can be used in the ABM expression with a GVALUE device. This table contains (Voltage, Resistance) pairs picked from points on the curve.The voltage input is nonlinearly mapped from the voltage values in the table to the resistance values. Linear interpolation is used between table values.

Let’s say that points picked from a Resistance vs. Voltage curve are:

Voltage

Resistance

0.5

25

1

50

2

100

The ABM expression for this will be as shown below:

Do let us know with your replies, if this is helpful and if you want to see more such posts in future.

Cadence Guidelines

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.