**Part Number:**OPA858

Dear all,

I am triying to simulate the TIA behavior of OPA858 using TI-TINA. I'm tring to I have some questions below:

1. Since the OPA858 is the kind of decompsensated OA, can I directly use the value of GBW(5.5Ghz) to estimate the f-3dB using the formula below:

2. Snapshot of the TINA schematic below. I'm wondering if the sysytem is stable.

Thanks,

Joey