• State TI Thinks Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 48 subscribers
  • Views 396 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TL061: TL061

Audrey Chee
Prodigy 20 points

Part Number: TL061

Tool/software:

We have been using TL061CDR with COO from Mexico but experiencing not funcitoning issue from this year with COO from Malaysia.  We realised the issue of offset function under NC 1 & 5 was closed.  Pls advise solution to continue using TL061CDR.

  • 0
    Guru 325160 points

    The new TL061 should be compatible with old one, inside the limits guaranteed by the datasheet.

    What exactly is the issue? What is the expected behaviour, and what are you observing instead?

  • 0 in reply to Clemens Ladisch
    Prodigy 20 points

    Thank you for your response.  We used to make use of this Pin 1 & 5 to stablize the passing through of the current but now we are unable to utilize it since they were both NC.  Would you be able to suggest alternatives to continuse the usage of TL061?

  • 0 in reply to Audrey Chee
    Guru 325160 points

    The new TL061 has a better typical offset voltage. If that is not enough, use an amplifier with better specifications.

    Apparently, offset adjustment is not a feature that is supported on new designs, probably because it is too much dependent on internal details.

  • 0
    TI__Guru* 77501 points

    Hi Audrey, 

    Clemens has mentioned about the PCN change in the product, see the attached notification.  

    https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/5485/PCN20230713001.1.pdf

    In the new FAB, the Voffset adjustment pins are removed and disabled. These two adjustment pins are no longer functioning in the new FAB op amps. 

    Audrey Chee said:
    We used to make use of this Pin 1 & 5 to stablize the passing through of the current but now we are unable to utilize it

    These are Vos adjustment pins. Due to the process improvement, the Vos should be consistent in the new design and Vos variability should be small. The TL061 is a general purpose op amp, and offset may be in 1mV range.  

    If the op amp's Vos is required to be low, you may have to consider to use precision op amps. We may be able to find p2p replacement. We do have some low cost precision op amps that are able to replace this part. I may be able to help you with the selection, if you are able to provide the application requirements. 

    https://www.ti.com/amplifier-circuit/op-amps/precision/overview.html

    Alternatively, you may do offset adjustment via the following technique, but it will require some changes. 

    If you have other questions, please let me know. 

    Best,

    Raymond