• State TI Thinks Resolved
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 47 subscribers
  • Views 78 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

OPA858: IBIS model

?? ?
Prodigy 20 points
Part Number: OPA858
Other Parts Discussed in Thread: TINA-TI

Tool/software:

I need to use the IBIS model of OPA858 chip for simulation. If possible, please send me the IBIS model via email or let me know how to obtain the model

Thank you

  • 0
    TI__Mastermind 25665 points

    Hello,

      IBIS models are created to simulate PCB behavior and modeling for devices with digital capabilities. Since the OPA858 is purely an analog device, we do not have an IBIS model for this device.

       PSpice netlists are available in the design & development tab of each device's product folder to simulate device behavior with PSpice for TI or Tina-TI. You can find the PSpice and Tina-TI netlist and reference model at this link.

    Thank you,
    Sima

  • 0
    Prodigy 20 points

    Thank you very much for your reply

    I have already used the PSpice model for simulation during the design phase, and the simulation results are satisfactory. But in the actual testing process, I found that the response time differed greatly from the simulation. I want to know if this is related to the fact that I used a regular material circuit board instead of a high-speed circuit board this time? May I ask how much the delay between a regular material circuit board and a high-speed circuit board may differ for the same circuit?

    Furthermore, in both simulation and actual testing, there is significant noise. Are there any effective methods to suppress noise? 

    Looking forvered for your reply！Best wishes

  • 0 in reply to ?? ?
    TI__Mastermind 25665 points

    Hello!

      Would you be able to share a snippet of your schematic/circuit, and details about your requirement? Did you observe propagation delay or did you observe increased rise time, or both. We have seen greater response times in regards to layout and material, but it could be some other concern depending on how large the response time you are obtaining. For example, if the concern is in rise time, then it could be a bandwidth issue due to parasitic on the board depending on layout and how fast your application needs to be. If it is purely material, you would probably expect a difference of around 100s of ps. 

      Noise can be eliminated with filtering up to your needed closed-loop bandwidth, and/or adjusting the circuit. We can help provide guidance if you are able to share your circuit either on this thread or via private messaging. 

    Thank you,

    Sima