Other Parts Discussed in Thread: TINA-TI, ADS127L01
The datasheet for the THS4551, on page 44, section 9.1.4, provides a TINA-TI, which is provided here.
When you look at the circuit described in that section, where datasheet shows 330 Ohm resistors connected to the opamp terminals, the simulation shows zero Ohm resistors. When you look at the image that is pasted inside of the simulation file, it also shows 330 Ohm resistors.
Is this a mistake in the model file? If so, does this mean that there is also a mistake in the datasheet? The datasheet claims Fo = 500 kHz, which agrees with what the simulation claims, but it appears the simulation used the wrong component value (0 Ohms instead of 330 Ohms).
The reason I am asking this is because I am using the demo kit for the ADS127L01, and I populated the board with the values as shown in the datasheet, but I am getting a larger frequency rolloff than desired. I assumed that with a rolloff of 500 kHz it would have been flat enough past 200 kHz, but then I discovered these issues when my measurements didn't match up with what I expected.