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Problem with ADA4940 LTspice model

Category: Software
Product Number: ADA4940
Software Version: LTspice (x64) 17.1.10

Hi, 

I discovered strange behavior from either the ADA4940 model or the LTspice itself. The second assumption seems more accurate.

As you can see in the screenshots above, splitting the gain resistor changes the gain settings of the circuit.

Is this a know issue? And if so, what is the solution/workaround?

  

Top Replies

    •  Analog Employees 
    •  Super User 
    Sep 4, 2023 in reply to EZAutoReply +1 verified

    Hi ,

    Good day. I think the way you set the values of the resistor was the main reason why there is a discrepancy between the expected and the simulated gain response. The resistor value should…

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