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  • OPA855-Q1: Power supply range for OPA855

    TI Thinks Resolved
    Part Number: OPA855-Q1 Other Parts Discussed in Thread: OPA855 Hi I saw the recommended power supply range is 3.3V~5.5V for OPA855 in datasheet, looks it is hard to use 3.3V to power OPA855, a little drop on power line will be over the spec, is the…

  • OPA855-Q1: Split Supply Mode connected EPAD to GND and not to -ve supply

    TI Thinks Resolved
    Part Number: OPA855-Q1 Other Parts Discussed in Thread: OPA855 Hello Team, I am using the OPA855 in a split-supply configuration and realized that I connected the exposed thermal pad (EPAD) to GND instead of the negative supply rail (VS−) as recommended…

  • OPA855-Q1: OPA855-Q1

    Part Number: OPA855-Q1 Other Parts Discussed in Thread: OPA855 We are developing Lidar by applying OPA855-Q1. OPA855-Q1 product bandwidth is 8GHz. The PD Bandwidth we are applying is 2GHz. We use the product at 100MHz. Is it possible for the product to…

  • OPA855-Q1: PMT pulse detection circuit

    Part Number: OPA855-Q1 Tool/software: Help with Circuit Design for H6520 PMT – Single/Few-Photon Pulse Detection Hello E2E Experts, Good day. I'm designing a pulse-counting circuit using the Hamamatsu H6520 PMT to detect single to few-photon events…
    • Answered

  • OPA855-Q1: SPICE Model

    Resolved
    Part Number: OPA855-Q1 Other Parts Discussed in Thread: OPA855 , Hi, Is the SPICE Model available for the OPA855, if so where can I find it. I am looking to do simulations in TINA. Thanks Gary
    • Resolved

  • OPA855-Q1: Loop stability

    Part Number: OPA855-Q1 Hello team, My customer is using OPA855-Q1, they want to test the loop stability of the OPA855-Q1. Is there any recommend way? Thank you so much. Best regards, Lanxi Li

  • OPA855-Q1: OPA855 temperature margin related performance temperature drift problem

    Part Number: OPA855-Q1 Other Parts Discussed in Thread: OPA855 , HI Team, Customer noticed that when the temperature drops, using the TIA circuit built by OPA855 (similar to the figure below), the phenomenon of ringing enhancement gradually appears…
    • Answered

  • OPA855-Q1: Why the recovery time of the OpAmp becomes longer?

    Resolved
    Part Number: OPA855-Q1 Other Parts Discussed in Thread: OPA858-Q1 , OPA858 Hi together, figure1 is my circuit schematic. My circuit is having a problem. After switching the channel of the switch chip, The output recovery time of the OpAmp (OPA855-Q1…
    • Resolved
    • Answered

  • OPA855-Q1: Output layout instruction

    Resolved
    Part Number: OPA855-Q1 Other Parts Discussed in Thread: OPA855 , LMH5401 The layout guidance provided in the OPA855 data sheet is to remove ground planes under all input an output pins. The Figure below the text only shows a cutout in the region…
    • Resolved

  • OPA855-Q1: No negative output from TIA - positive output is good

    Part Number: OPA855-Q1 Other Parts Discussed in Thread: OPA858 , OPA855 I'm debugging a TIA circuit using the OPA855 or the OPA858.this pcb has five identical circuits and I'm observing this error. I'm testing for both negative and positive photo…

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