Stats

Locked Locked
Replies 3
Subscribers 125
Views 12113
Members are here 0

This discussion has been locked.

You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Plotting a function on Cadence calculator that requires the temperature read from x-axsis

Senan over 4 years ago

Hello,

I am dealing with temperature to frequency sensor design.

I have simulated the output frequency as a function of temperature in the range from -40 to 85

I need to calculate and plot the sensor accuracy, the is the error as

error in °C = f(T)actual output curve - f(T) ideal curve

approxiamating my sensor output to a linear curve, the ideal curve will be

f(T) = fo-S(T-To)

where fo and To are the frequency and temperature at nominal room condition. S is the average slope

The above variables are very easy to get from simulation, but my problem is how plot this function [ fo-S(T-To)], it contains the variable T that is introduced by cadence and I don't know how to import it as a variable in Cadence calculator

I am using Cadence Virtuoso version IC6.1.8-64.500.6

Thank you

Regards

ShawnLogan over 4 years ago

Dear Senan,

Senan said:
The above variables are very easy to get from simulation, but my problem is how plot this function [ fo-S(T-To)], it contains the variable T that is introduced by cadence and I don't know how to import it as a variable in Cadence calculator

You should be able to use VAR("temp") to access the temperature from a simulation in a Calculator expression. Have you tried that? This is detailed in the On-line Support article at Cadence URL:

https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000nVzOEAU&pageName=ArticleContent

Shawn
Cancel
Vote Up +1 Vote Down

Cancel
Senan over 3 years ago in reply to ShawnLogan

Thank you shawn for your help

that worked with me
Cancel
Vote Up 0 Vote Down

Cancel
FormerMember over 3 years ago in reply to Senan

Dear Senan,

> that worked with me

Excellent Senan! I am happy to read you are on your way. Thank you for letting us know and good luck!
Cancel
Vote Up 0 Vote Down

Cancel

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.