TINA/Spice/TLC555-Q1: Frequency Calculation error between Spice model and Calcuation

Nagasrinivasa Kureti

Part Number: TLC555-Q1
Other Parts Discussed in Thread: TINA-TI, TLC555

Tool/software: TINA-TI or Spice Models

Hi Team,

This is regarding the TLC555 timer A-Stable functionality issue in the Spice simulation model. I have seen the difference in frequency results between spice model and calculations (Formulas from the datasheet). So, could you please clarify whether the model is working correctly or not?

over 6 years ago

0 John Miller - Sensing over 6 years ago

TI__Mastermind 33250 points

Nagasrinivasa,

We will need to see your circuit configuration to know what is going on.
Please upload your schematic to this thread.

Regards,
John

0 Nagasrinivasa Kureti over 6 years ago in reply to John Miller - Sensing

Prodigy 115 points

Dear John,

Please find the attached diagram

0 Nagasrinivasa Kureti over 6 years ago in reply to Nagasrinivasa Kureti

Prodigy 115 points

Hi Team,

Did you any update for this query?
Thanking you in advance.

0 Ahana Ghosh over 6 years ago in reply to Nagasrinivasa Kureti

TI__Intellectual 820 points

We are looking into this,will get back to you shortly.

0 John Miller - Sensing over 6 years ago in reply to Ahana Ghosh

TI__Mastermind 33250 points

Nagasrinivasa,

Some additional details would be helpful.
Apologies that I did not ask for that at the beginning.

What are the goals for your circuit?
What simulation results do you get and how do they compare to the calculated results derived from the data sheet equations?

If you have a spreadsheet with the calculations, that would be helpful as well.

Regards,
John

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TINA/Spice/TLC555-Q1: Frequency Calculation error between Spice model and Calcuation