The TFI science team has provided the following sensitivities assuming a constant R=100 across the wavelength range. (In practice, this will slowly oscillate from ~70 to ~150.) The extraction aperture is 0.2" diameter at all wavelengths.
While the TFI wavelength range requirement is 1.6 - 2.5 µm, 3.2 - 4.9 µm, they provide sensitivity estimates from 1.5 - 2.6 µm and 3.1 - 5.0 µm(the goal).
These data are also provided in tabular form.