Problem with ADA4940 LTspice model

Hi AlexAnderB,

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 directly be input as a numeric value with the proper prefix if necessary. There should be no difference in the simulations since the resistor model used in LTSpice was ideal.

I have tried to simulate the circuit.  The simulations below show no difference in the gain response even if the resistor was split into multiple values.

Fig 1. Schematic Diagram with a Single Gain Resistor

Fig. 2. Gain Response of a Single Gain Resistor

Fig 3. Schematic Diagram with Splitted Gain Resistor

Fig 4. Gain Response of Splitted Gain Resistor

Thanks a lot! Everything is working now.

Hi,

I believe that the questions have already been answered so I am closing this thread. Thank you!

Regards,

Mae