LMH6881: Simulation in TINA

David D

Intellectual 580 points

Part Number: LMH6881
Other Parts Discussed in Thread: TINA-TI

Hello,

I've downloaded the LMH6881 reference design (in TINA) and performed AC response simulation.

The resulting plot attached below.

How and where is the "Gain" calculation are performed?
Why there are two set of plots for "Vin", "Vout", "Gain"?
Does the TINA model accurately reflects distortion?

Thanks,

David.

over 4 years ago

0 kai klaas69 over 4 years ago

Guru 140200 points

Hi David,

your plot didn't come through. Please use the "Insert File" button (paper clip).

Kai

0 David D over 4 years ago in reply to kai klaas69

Intellectual 580 points

Hi Kai,

See attached.

Regards,

David.

0 kai klaas69 over 4 years ago in reply to David D

Guru 140200 points

Hi David,

this is done by using the so called "Post-Processor":

Kai

0 kai klaas69 over 4 years ago in reply to kai klaas69

Guru 140200 points

Hi David,

you might want to watch the TI's TINA-TI training videos:

Kai

0 Hasan Babiker31 over 4 years ago

TI__Genius 15555 points

Hello David,

1. As Kai mentioned this is done using the post-processor on TINA.

2. If you collect the curves (View -> Collect Curves), the plots on the bottom represent the phase.

3. If you go into the macro you can see what specs were modeled. For distortion, "Singe-tone distortion (HD2/3) at max gain is close to the published specs for the case of a nominal 200 ohm resistive load."

Best,

Hasan Babiker

0 David D over 4 years ago in reply to Hasan Babiker31

Intellectual 580 points

Kai, Hasan,

Thank you for your help.

David.

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LMH6881: Simulation in TINA