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Simulation problem- LTspice model of ADA4930-1

Category: Hardware
Product Number: ADA4930-1

Hi, 

I need single to differential Amp, low noise and abut 1MHz to 200MHz, G=1. 

I found this amplifier, I performed a simulation in the Diff-Amp Calculator software and it looks good, but the LTspice simulation I don't see that the model works for me accordingly.

 Diff-Amp Calculator:

LTspice: The G is not 1, the amplifier fails me for some reason. 

Thanks 

Barak



fix
[edited by: Barak at 4:23 PM (GMT -4) on 12 Mar 2023]
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  • Hi Barak,

    The ADA4930-1 is only operational up to 5V supply.
    The Diff Amp calculator software also gives this warning on your configuration (you configured it to +/-5V or 10V single-supply equivalent). 

    I attached a sample circuit with a gain of 1 based on your configuration. I set the Vocm to 2.5V though.
    please see and let us know if you have more questions. 

    ADA4930-1_test.asc

    Hope this helps.

    Best Regards,
    Dann

Reply
  • Hi Barak,

    The ADA4930-1 is only operational up to 5V supply.
    The Diff Amp calculator software also gives this warning on your configuration (you configured it to +/-5V or 10V single-supply equivalent). 

    I attached a sample circuit with a gain of 1 based on your configuration. I set the Vocm to 2.5V though.
    please see and let us know if you have more questions. 

    ADA4930-1_test.asc

    Hope this helps.

    Best Regards,
    Dann

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