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OPA855: OPA855 Design reference

jeno.zhang
Expert 2505 points
Part Number: OPA855

Hi，

OPA855 is used as a voltage amplification circuit, SIPM optical signal acquisition, with a bandwidth of 200MHz and a gain of 20. When the optical signal is relatively large, the signal output is distorted. Is there any relevant reference design and PCB layout considerations available? Thanks！

  • 0
    TI__Mastermind 25705 points

    Hello Jeno,

      Would it be possible to share your schematic + images of the PCB layout with us? If you are unable to share these publicly, you may send me a private message by clicking on my E2E profile.

      Also a few questions:

    1. What is the diode (SiPM) capacitance?
    2. What is the input current range?

    Thank you!
    Sima