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WEBENCH® Tools/TL071: Hard to find alternative op amp in webench filter design

Part Number: TL071
Other Parts Discussed in Thread: TLV313, , TLV314, OPA314

Tool/software: WEBENCH® Design Tools

Support Path: /Tools & software/Help me with an issue/WEBENCH Power and Analog Design Environment/Getting Started with WEBENCH/

I have webench active filter design for me a butterworth filter with LT071 selected by the software, however, TL071 is not a good rail to rail op amp, I want to use same price range one to replace it. such as TLV314 or TLv313. But I could not find these parts in alternative list, I found OPA314, but simulation chart is not available....

BTW, with webench filter design UI, it is not easy to find a right alternative and I can not key in preferred part to run a simulation...Can any one show me a way out?  

If I select my own op amp part, how can I put it into Webench filter design UI and run a simulation?

Thank you



  • Tony,

    The webench team will reply to your concern, however being the weekend may delay response to Monday US time.
  • Hi Tony,

    Thank you for your feedback about the WEBENCH Filter Designer tool.  The TLV314 and TLV313 are not supported in the tool.  The OPA314 is supported but there seems to be a problem with the simulation page.

    If you have a preferred part that you want to use for your WEBENCH design and simulation, search for that part on  If the part is supported, you will see a launch panel that allows you to directly create a design using that part.


    If you are already in a design and want to find an alternate part, click Select Alternate which will take you the alternate parts page.  On the top of the page, you will see a set of sliders that can help you narrow down the list based on your requirements.


    I look into having the OPA314 simulation page problem resolved and will get back to you shortly.  Feel free to let me know if you have any more questions.

    Khang Nguyen

    Online Design Tools

  • Hi Tony,

    The simulation page problem for the OPA314 has been fixed.  Feel free to let me know if you have any more questions.


    Khang Nguyen

    Online Design Tools