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  • OPA855: OPA855 has a peak voltage output when enabled

    Part Number: OPA855 Hello, The OPA855 has a relatively high power consumption, and the customer uses the enable function. When enabling the operational amplifier, the output has a peak voltage (300mV-400mV) and a downward probe negative voltage. After…
    • Answered

  • OPA855: what is low frequency cutoff of OPA855?

    Resolved
    Part Number: OPA855 what is low frequency cutoff of OPA855?
    • Resolved

  • OPA855: OPA855 Design reference

    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…

  • OPA855: OPA855 simulation

    TI Thinks Resolved
    Part Number: OPA855 Hello， Does OPA855 need to add parasitic parameters of amplifier itself during simulation? Thanks！

  • OPA855: TINA-SPICE simulation gives unrealistic results

    TI Thinks Resolved
    Part Number: OPA855 Other Parts Discussed in Thread: TINA-TI We are designing a photodiode detector circuit operating up to 3 GHz with the OPA855. Based on the photodiode capacitance of 4.5 pF and the gain curves in the datasheet, we should be using about…

  • OPA855: OPA855 with harmonic

    Part Number: OPA855 Hi Team, My customer test OPA855 with schematic below, Customer find output harmonic if no signal input, customer try change Rout resistors value and harmonic also changes, Rout 0ohm Rout 50ohm Rout 100ohm we suggested customer short…

  • opa855, TIA for BPD

    Other Parts Discussed in Thread: OPA855 Hi guys. I want to design a TIA for BPD, the bandwidth(signal) needed is above 1.5GHz , gain > 15000 V/A , and min NEP< 10 pW/sqrt(Hz) . I prepare use OPA855. Anyone has an idea?
    • Answered

  • OPA855: Phase shift questions

    Resolved
    Part Number: OPA855 Other Parts Discussed in Thread: TINA-TI Hello, I currently use the OPA855 as the first stage, and then I want to cascade two or three stages but I have some difficulties. Question about the phase: Debug the OPA855 closed-loop bandwidth…
    • 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…

  • OPA855: 0.001% settling time

    Part Number: OPA855 Dear team, In the datasheet of OPA855, I noticed that the 0.001% settling time is also indicated in the datasheet. However, in our application which use the OPA855 as TIA, we only focus on the 0.1% settling time instead of the 0.001…

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