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  • 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-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…
    • Answered

  • OPA857EVM-978: OPA857EVM

    Resolved
    Part Number: OPA857EVM-978 Other Parts Discussed in Thread: OPA857 , OPA858 , OPA855 , OPA859 Number: CS0300295 Contact: Andrea Papi First name: Andrea Last name: Papi Short description: TIA Design for PMT Tube Phone: 003907558527543907 Email: andrea.papi…
    • 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

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

    Hello Jakub, Sorry about the confusion, attached is the step file for the board. The OPA857EVM-978 is the same board as our reference design TIDA-00978. You will find all the design files on the reference design page. EVM Step File.zip Best, Hasan Ba…

  • 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 …

  • WEBENCH® Tools/TIDA-01573: TIDA-01573, OPA857EVM-978, ADC12J1600EVM

    TI Thinks Resolved
    Part Number: TIDA-01573 Other Parts Discussed in Thread: OPA857 , OPA857EVM-978 , ADC12J1600 , LMG1020 , LMG1020EVM-006 Tool/software: WEBENCH® Design Tools Hello, I'm, working on some device in automotive and I would like to use your products (TIDA-01573…
    • Answered

  • RE: OPA857EVM-978: Setting the Module Into Test Mode and Conducting Frequency Tests

    Resolved
    Hi Hasan, It's really good of you to follow up. I think I've managed to work out the issue. I've realised the issue was the gain was too low and I could not detect my signal. This all occurred from incorrectly calculating the current produced…
    • Answered

  • OPA857EVM-978: Setting the Module Into Test Mode and Frequency Limits

    Resolved
    Part Number: OPA857EVM-978 Firstly, I am trying to set the module into test mode to verify it's working correctly before connected a diode. In the datasheet it species that I first must 'set the Test_SD pin to +VS' and includes a diagram: …
    • Resolved
    • Answered

  • OPA857EVM-978: Psudo differential output to single ended

    Resolved
    Part Number: OPA857EVM-978 Other Parts Discussed in Thread: OPA857 Hello, I bought the OPA857EVM-978, but I won't feed the output to an ADC. Instead, I will feed it to a passive filter and then to a PID circuit. Thus, I would like to convert the psudo…
    • Resolved

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