WEBENCH® Tools/THS3491: THS3491

Itay Mamamn

Prodigy 150 points

Part Number: THS3491
Other Parts Discussed in Thread: TINA-TI, THS4541

Tool/software: WEBENCH® Design Tools

please help

I need Pspice model for THS3491

Tnx

over 4 years ago

0 Hasan Babiker31 over 4 years ago

TI__Genius 15555 points

Hello Itay,

You can find the .lib spice file for either package in the "TINA-TI Spice Model" zip file. Let me know if you have any issues.

Best,

Hasan Babiker

0 Itay Mamamn over 4 years ago in reply to Hasan Babiker31

Prodigy 150 points

Thanks, the model works fine.

Is there a document for "THS4541" detailing the error calculations - > error budget

From calculations I made from the accepted equations (Vos ,Ib, bias ) the results do not align with the SPICE electric model

Tnx.

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

Guru 140200 points

Hi Itay,

the Spice Model only provides typical values for the input offset voltages and input bias currents.

Can you post a schematic or your TSC-file, if you have?

Kai

0 Michael Steffes over 4 years ago in reply to Itay Mamamn

Guru 48395 points

Each of the 3 input DC error terms is also bipolar around 0 for the CFA, The model must also pick a polarity for each of these which is frankly somewhat random. The typ output DC error for the TINA model should be within the worst case range, but only representative.

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WEBENCH® Tools/THS3491: THS3491