The TI E2E™ design support forums will undergo maintenance from Sept. 28 to Oct. 2. If you need design support during this time, contact your TI representative or open a new support request with our customer support center.



Search tips
Showing 24 results View by: Thread Post Sort by

  • OPA857EVM-978: 0 Volts at OUTN and OUT pin in both Test and APD mode.

    Part Number: OPA857EVM-978 Other Parts Discussed in Thread: OPA857 Hello, I am getting 0 Volts at OUTN and OUTP pins in both the TEST and APD mode. Vcc is 3.3 Volts. Ideally, I should have got 1.83 V at the OUTN pin. Regards, Amar

  • OPA857EVM: EVM stopped working

    TI Thinks Resolved
    Part Number: OPA857EVM Other Parts Discussed in Thread: OPA857 , Hi Experts, My customer had a question about OPA857-evm product. He purchased 2 of them and it worked. However, there was a power glitch in their building and the evm stopped working. Just curious…

  • OPA857EVM-978: Increase output swing

    TI Thinks Resolved
    Part Number: OPA857EVM-978 Other Parts Discussed in Thread: OPA857 , To evaluate the OPA857 I purchased a OPA857EVM-978 board but I am a bit confused by the output configuration of the board. First of all my board had R15 installed and not R14. So there was…

  • RE: OPA857EVM: OPA857EVM Troubleshooting

    Hello Mark, Sorry for the delay in the response. They should be getting around 900mV at OUTN (OUT-) which will not be affected by the input signal, since this is the reference voltage. Do they have R7 populated with the 56 ohm resistor? Thank you, S…
    • Answered

  • RE: OPA857EVM-978: OPA857EVM

    Resolved
    Hello Asan, I will try using this OPA. Thanks a lot my thanks also to Kai for his design and simulation very useful. My best regards. Andrea.
    • Answered

  • OPA857EVM: OPA857EVM

    Resolved
    Part Number: OPA857EVM Hello, What is the difference between the OPA857EVM and the OPA857EVM-978? Thanks, Alex
    • Resolved
    • Answered

  • OPA857EVM-978: Test Mode OUT & OUTN Voltages Doesn't Change with DC Bias

    Resolved
    Part Number: OPA857EVM-978 Other Parts Discussed in Thread: OPA857 I'm trying to figure out the test mode right now, and the connection is as follows and I've attached a pic for the board: I've connected the TEST_SD pin to Vs to configure in test…
    • Resolved

  • WEBENCH® Tools/OPA857EVM-978: OPA857EVM-978

    TI Thinks Resolved
    Part Number: OPA857EVM-978 Other Parts Discussed in Thread: OPA857 , , TIDA-00978 Tool/software: WEBENCH® Design Tools Hello, I'm, working on some device in automotive and I would like to use your product "OPA857EVM-978 - OPA857 Bandwidth Extension Evaluation…

  • OPA857EVM-978: Why am I getting 0V at both outputs (VOUTN = VOUTP = 0V)?

    Part Number: OPA857EVM-978 Other Parts Discussed in Thread: OPA857 Hello, I want to use the OPA857EVM-978 in the photodiode mode with a SM05PD1A Silicon photodiode. Test setup - Evaluate the performance of the OPA857 in the standard photodiode input …
    • Answered

  • RTOS/OPA857EVM: OPA857EVM

    Resolved
    Part Number: OPA857EVM Other Parts Discussed in Thread: TIDA-00725 Tool/software: TI-RTOS Hi, I am using TIDA-00725 Signal-Chain Circuit, can anybody please tell me what is value of R28 in BOM? Thanks Ahsan
    • Resolved

Didn't find what you are looking for? Post a new question.