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LMH6515: Is it possible to use with Split Supply ±2.5 V

Shinichi Inoue
Guru 20706 points
Part Number: LMH6515

Tool/software:

Dear Specialists,

My customer is considering LMH6515 and has a question.

I would be grateful if you could advise.

---

Regarding LMH6515,  

Operation with Split Supply ±2.5 V

I am considering whether LMH6515 could use DC single-end and positive/negative input.

Also, could you please provide a circuit example.

ｰｰｰ

I appreciate your great help in advance.

Best regards,

Shinichi

  • +1
    TI__Expert 8400 points

    Hi Shinichi, 

    The LMH6515 can be used with +/- 2.5V supplies by connecting the GND pin to -2.5V. However, if you do this the digital input pins will now be referenced to -2.5V instead of GND. This means the logic low on the digital inputs will be -2.5V. 

    I answered the input question in your previous thread. 

    Regards, 

    Jacob 

  • 0 in reply to Jacob Freet
    Guru 20706 points

    Hi Jacob,

    Thank you for your reply.

    I understand LMH6515 can be used for +/- 2.5V split rail.

    In this case, it must be considered logic level shift.

    I'll share with the customer.

    When the customer has an additional question, I consult with the other thread.

    I appreciate your great help and cooperation.

    Best regards,

    Shinichi