TINA/Spice/TLV2372: Bode Gain Plot in actual magnitude instead of dB

Jared Becker

Part Number: TLV2372
Other Parts Discussed in Thread: TINA-TI

Tool/software: TINA-TI or Spice Models

Hi Team,

Is it possible to change a setting in TINA so that I can get a Bode plot with actual magnitude on the y-axis instead of dB? I would like to see the actual level response vs the normalized response.

Thank you!

Jared

over 5 years ago

0 John Miller - Sensing over 5 years ago

TI__Mastermind 33230 points

Jared,

Double-click on the vertical axis of the plot and the Set Axis window will appear.

In the Scale pull-down on the lower left you can select Linear-dB, Linear or Logarithmic.

Select the one you want, and it will re-scale the vertical axis accordingly.

Regards,
John

0 Jared Becker over 5 years ago in reply to John Miller - Sensing

TI__Genius 11505 points

Hi John,

Perfect, thank you for the quick response. I have one more question for you..

If I want to only look at the dB in terms of Vout instead of looking at dB in terms of Vout/Vin, is that possible to achieve?

I'm not sure if I can do that with a Bode plot, but if you have any insight that would be great!

Thank you!
Jared

0 JC Zhu over 5 years ago in reply to Jared Becker

TI__Mastermind 29035 points

Jared,

What's shown is in fact the absolute value rather than Vout/Vin. However, in TINA Vin is fixed to 1 in AC sim.

A workaround is to insert a VCVS to convert Vin to the actual input. E.g. if your input signal swings 1mV, you will set the VCVS' gain to 0.001. You will see a 60dB difference in the gain plot.

Regards,
JC

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TINA/Spice/TLV2372: Bode Gain Plot in actual magnitude instead of dB