The revised SPICE model for the ADA4895 is attached. This should have the noise modeled correctly.
ADA4897-1 features up to 230 MHz BW at the gain of 1 with output current drive of up to 80 mA when use with +/-5V supply.
ADA4895-1 has 236 MHz BW and output current drive of up to 80 mA when use with +/-5V supply.
AD8099 has 510 MHz BW with +/-5V…
You are using an op amp that is three times higher gbw than the AD811 on the eval board.
Faster is not always better. I would use ADA4895-1, ADA4897-1, ADA4891-1 instead of
With any high speed op amp, you need two bypass caps…
I'll ask for the data of the ADA4895 distortion at Vout lower than 2Vp-p. I'll get back to you on this.
I'd estimate the GBW of ADA4895 to be a little higher than your calculation based on the same Figure 18 you noted.
At 40dB gain, the frequency reads more like 22MHz or about 2.2GHz GBW.
At 50dB (316 V/V) gain, the frequency reads 10MHz…