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  • RE: OPA2626: Strange behavior of OPA2626

    Hello, The OPAx625 is the same design structure as OPA2626; the difference is the OPA2625 core has shutdown pin functionality. The OPA2626 does not have shutdown. If the test result is good with OPAx625 you are okay to evaluate and use OPA2626. You can…
    • Answered

  • OPA2626: Impedance match for Input Bias current

    Resolved
    Part Number: OPA2626 Tool/software: To minimize the input bias current impact on the output of OPA2626, I understand it is necessary to match the impedance. For Invert Input Amplifier, I should add a R=RF//RG in the Non-invert Input to match the impedance…
    • Resolved

  • OPA2626: Input-Referred Noise Calculations - 2nd Opinion

    Part Number: OPA2626 I need some help confirming if my math is right. Trying to calculate the input-referred noise in this OPA2626 circuit. *Rf is lower than Rin; this is a non-inverting signal-attenuation application where 20LOG(Vout/Vin) = -1.16dB …

  • OPA2626: OPA2626 PSpice very strange results

    Part Number: OPA2626 Other Parts Discussed in Thread: OPA626 Hello, I'm simulating a simple noninverting circuit with the OPA626 in OrCAD PSpice 17.2. It runs fine, if the voltage at the +Input is 0.5 * (VCC-VEE). If it deviates by an offset from this…

  • OPA2626: TINA-TI Simulation Error

    TI Thinks Resolved
    Part Number: OPA2626 Other Parts Discussed in Thread: LM7705 Hi Team, Customer is encountering strange behavior during the OPA2626 simulation. Below is the details. " A simple voltage buffer transient simulation was configured with the 0 initial value…

  • OPA2626: Settling Time in small signal space

    Part Number: OPA2626 Other Parts Discussed in Thread: TINA-TI , OPA2837 , , OPA837 , OPA2625 , OPA625 Dear TI community I am developping and ADC stage with 16bit resolution and looking for a buffer to drive the ADC. The settling time is quite critical and…
    • Answered

  • RE: OPA838: Stability problem by feedback resistor

    Resolved
    Now I realize OPA838 is not a good choice. I would like to try OPA2626, this part could be better

  • RE: TINA/Spice/OPA2626: OPA2626

    Dave, Apologies for the delayed reply. I believe I have a solution, but it needs more testing. I will close this thread for now, but once the model is complete, in about a week, I will reactivate & update this thread with the new model. Regards, Joh…
    • Answered

  • OPA2626: Damage voltage on Vout when unpowered

    Resolved
    Part Number: OPA2626 The OPA2626 looks like a good solution for our need as a high speed 50ohm output driver to a scope/ADC. In our design the output will be connected to BNC connector to the outside world to allow driving a scope or external ADC. I am…
    • Resolved
    • Answered

  • TINA/Spice/OPA2626: Noninverting circuit output reference voltage drop with Tina

    Resolved
    Part Number: OPA2626 Other Parts Discussed in Thread: TINA-TI , Tool/software: TINA-TI or Spice Models I made noninverting OP-amp circuit with OPA2626(626) and tested with Tina Ref voltage is 1.65V, and input signal is swing 2mV PP from 1.65V. And gain…
    • Resolved

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