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OPA858: OPA858

Part Number: OPA858

Dear team,

I want to confirm if it works when add V+ 3.3V, IN(+) to GND, IN(-) to APD?


Best regards,


  • Hello Sammi,

    More details would be helpful to evaluate, such as your desired transimpedance gain & photodiode specs. Or if you could provide a schematic. 

    In a basic sense, however, this will only work if you are using your APD with a negative supply bias. If your APD is configured with a positive supply as shown in figure 56 of the OPA858 datasheet, you will either need to increase the voltage at your non-inverting pin or add a negative supply since your output will be swinging down rather than up.


    Hasan Babiker