**Part Number:** THS3491

Hi I'm trying to use the THS3491 and minimize the signal chain noise in my application. Using the TI evaluation board I notice that for a non-inverting amplifier with a gain of x2 the part is stable if RF = Rg = 499 Ohms but is unstable if Rf = Rg = 249 Ohms (+/-9V supply). Assuming we want a 10dB gain margin and 30 degree phase margin can you possibly define the optimal resistor values for gains of say +2, +5, +10, -2, -5, -10 ? I would do this in simulation but the TI spice model is broken and doesn't run in LTSpice ! Thanks Steve