How effective can be 3-stage OPAMP solution based on AD8055 for photo diode signal detecting

Hi all,

I am currently research about VLC and I developed some photo detector solution based on 2-stage AD8055 as DIP-based 300MHz VFb OPAMP, as I needed to go far beyond ~6MHz that was proposed in solution from AD photo diode wizard,  I modify and tweak it and now it is +20MHz mid-high Vpp ready, but now I need more. Limitations are that i need to be DIP-based solution with low cost parts so I start making sketching 3-stage OPAMP solution. I would like to ask people more competent that me for suggestion before I make purchase and waste time and money, questions is it useful, what will be the issues and potential problems?

Will this proposed design work well in reality, as it is in simulators and is it possible to get it work?

Any case if you cut 3th stage you get my design for good photo-detector that works just fine, and it is for free if you just reference me

THX in advance,

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  • OK, I make that 3 stage AD8055 (DIP) photo detector solution and it work like champ, even on the breadboard.

    It take some time to tune it up but I can say that it is +30dB for range 0.1 to over 50MHz, although I get disappointed by results of luminescent/photonic values of the things that i needed to measure with it, it performs as a good tool and give me true image of thing that I need to see (and get).

      It looks crazy, specially whit that hand made shielded 1st to 2nd but it work. It improve 13~18dB signal strength although it increase signal delay by <~50ns, V/us stay high (did not decrease to much).

    Legal notice: I give this design in good will for free and expect in return, that all will respect academic and GPL2 code of conduct regarding its usage, and just reference me as author. If anyone falsely claims rights on it or try to patent it or get material benefits form third party, I will re institute and reserve all rights including right to demand compensation from it for that miss conduct