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TL061: Difference between TL061C and TL061I

Shinichi Inoue
Guru 22281 points

Part Number: TL061
Other Parts Discussed in Thread: TLC271

Dear Specialists,

My customer'd like to know the difference between TL061C and TL061I.

I would be grateful if you could advise.

---

Currently, we are using TL061CPSR (SO package), but it is a commercial product and there is no temperature regulation, so it seems to be a problem.

SO package is supported only commercial grade, it needs to investigate,

Could you please let us know following questions.

(1) Regarding the offset voltage, the MAX value of the TL061I is better than that of the TL061C, even though the temperature range is wider.

Are the dies inside using the same one or different one?

(2) TL061C is characterized at 0 to 70 ° C, is there any measurement data below 0 ° C?

---

I  appreciate your great help in advance.

Best regards,

Shinichi

  • 0
    TI__Guru**** 170746 points

    Hello Shinichi-san,

    I looked for a replacements (high voltage) op amps. Single channel in SO-8 is really rare, only TL061C was found. If 16V maximum supply is acceptable, then TLC271 would have worked, but its SO package is also only 0C to 70C.

    If this is a new design, then I would strongly suggest not using SO package (for a single op amp). Many great alternatives are possible in other packages.

    If this is an old design (products already in the field), then take a little comfort that TL061CPS is currently sharing a die with TL061I. Using TL061CPS outside of the specified temperature range could affect the part's warranty. I suggest an application board redesign as the appropriate plan of action going forward.

  • 0
    Guru 22281 points

    Hi Ron,

    Thank you for your reply.

    In this case, the customer has been using TL061C not knowing commercial grade.

    So they are looking for if there is a way to continue using the TL061C.

    As you say, commercial products are not guaranteed to operate at low temperatures, so I don't think they can be used.

    I don't think there is any data at minus temperatures, so I will answer that there is no data.

    I'll suggest to change the device and promote TLC271.

    I appreciate your great help and cooperation.

    Best regards,

    Shinichi

  • 0 in reply to Shinichi Inoue
    TI__Guru**** 170746 points

    Shinichi,

    Please note that TLC271 in the SO package has the same issue, 0C to 70C temperature range. I could not find a compatible device.

    The only solutions are: 

    1) Redesign for another package footprint

    2) Find an non TI device that is same package and meets all the application requirements

    3) Accept the risk and potential consequences for not following the device rules

  • 0
    Guru 22281 points

    Hi Ron,

    Thank you for your reply.

    I'll talk with the customer and ask them consider your three suggestions.

    I appreciate your great help and cooperation.

    Best regards,

    Shinichi

  • 0
    Guru 22281 points

    Hi Ron,

    I have one more question.

    There are few operational amplifiers that support the SO package.

    The SO package has few operational amplifiers that support industry grade.

    What is the reason for these?

    Is this because the SO package is not widely distributed on the WW?

    So it isn't supporting industrial grade?

    I appreciate your great help and cooperation.

    Best regards,

    Shinichi

  • 0 in reply to Shinichi Inoue
    TI__Guru**** 170746 points

    Shinichi,

    I believe the time when single op amp in 'SO' were at peak popularity (a tiny peak) , the most common temperature range was 0C to 70C. So that is how they were released. After that time, SO was still used for dual amp amps and larger pin counts but no more single op amps. Some of these (not single op amp) devices are wider temperature. There hasn't been a strong business need to update any of the few single op amps in SO.

  • 0 in reply to Ron Michallick
    Guru 22281 points

    Hi Ron,

    Thank you for your reply.

    I'll share your advice with the customer.

    when they have an additional question, I consult you again.

    I appreciate your great help and cooperation.

    Best regards,

    Shinichi