Part Number:OPA843
Tool/software:TINA-TI or Spice Models
Hello;
I have a 1 photodiode and 1 Avalanche photodiode.
I have tried OPA857 before but I need to design new pcb for my application.
First I want to build TIA and second stage amplifier for 0-200mhz signal
For the Photodiode(FGA01-Thorlabs) I am unable to choose even though I almost memorize the Opamp specs.
First of all I am in between OPA656-OPA843-OPA847- Opa381(I prefer msop package) and for second stage THS4504 Seems fine to me but I am not sure. After the second Stage I will use Microcontroller for Signal processing.
For the Avalanche Photodiode(G8931-10 Hamamatsu)
I though I can use same opamps but Still I am not sure. The bandwith is the same as photodiode. I also used Opa857 before for this application.
But I am open to any suggestion about my design.
The light I am trying to detect has really low illumination.
Thanks in advance.
Best regards