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TL082H: SPICE MODEL FOR THE TL082H

Robert G Johnston
Prodigy 10 points
Part Number: TL082H
Other Parts Discussed in Thread: TL082,

Tool/software:

The TL082H has a compelling price to performance ratio, far improved common mode range and  rail to rail outputs over the old TL082.

All looks very good until I find no mention of spice models being available.

Life without spice has long long ago become a noncompetitive way to move through the design process in my experience.

Is this lack of mention of spice models just a over sight in the documentation and spice models are actually available for the TL082H?

Hope so as the TL082H could make life better in many ways over using older generation parts if a spice model is available.

Thanks for your help

Bob

  • 0
    Guru 304260 points

    On the product page, click on "Design & development" and "Design tools & simulation".

  • 0
    TI__Mastermind 24025 points

    Hi Bob, 

    As Clemens mentioned it can be found under Design tools and simulation in the link below. 

    https://www.ti.com/product/TL082#design-tools-simulation

  • 0 in reply to Clemens Ladisch
    Prodigy 10 points

    My question was "Are there spice models for the new TL082H parts?"

    As your answer to my question points me to spice models for the old TL082 please confirm your answer to my question is

    "NO there are no new spice models that capture the substantial differences in performance between the old and new parts".

    As there are no updated spice models to represent the improved performance it can be seen that for designers that verify their designs through spice simulation it will be impossible to model and simulate any of the improved parameters found in the TL082H.

    Therefor the improved parameters can not be taken advantage of in any new spice verified design as they can not be modeled or confirmed.This unfortunately makes a strong case that the new TL082H is not suitable for new designs as these new designs can not be performance confirmed through simulation.

    I believe you will find this lack of support of updated models limits your opportunity for new design-ins with the TL082H.

    That is a great pity as it is a promising part.

  • 0 in reply to Robert G Johnston
    Guru 304260 points

    The TL082H models can be found on the TL082H web page.

  • 0 in reply to Robert G Johnston
    TI__Mastermind 24025 points

    Hi Robert, 

    We do not have an updated model since both die variants will exist on the market until the old version is completely bought up. We do not have a way to tell a customer if they are getting the old or the new device and for this reason the conservative model is the only one available. We will add it to the list of suggested models to update in the future. In general the philosophy is that the updated devices meet the product datasheet specs and in some instances can be better. We do have newer devices such as the OPA164x family that have an improved model. 

    https://www.ti.com/product/OPA1642

    Best Regards, 

    Chris Featherstone

  • 0 in reply to Chris Featherstone
    Prodigy 10 points

    Thank you for making the situation with the TL082H clear. That is very helpful.

    I personally think you are underselling your new TL082H.

    The new part does have significant advantages the most important in my opinion is the improved common mode voltage range.

    The old TL082 your inputs have to stay 4 volts away from the rail. That is a very long way! On +5/-5 rail designs that leaves little room for any common mode application like differential amplifiers.

    On the new TL082H the common mode range is specified right to the positive rail and can be as close as 1.5 volts from the negative rail. That is a game changer that opens up the TL082H to many new and useful applications the old TL082 can not touch and does it at low cost.

    Add in the much lower supply draw and the TL082H becomes a great little puzzle solver for low cost applications.

    Take care

    Bob J.