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OPA170: Power supply concerns

Shunsuke Yamamoto
Genius 9661 points

Part Number: OPA170

Tool/software:

Hi team,

Are there any concerns to use OPA170 when the power supplies are below?

V+: -21V

V-: -56V

Best regards,

Shunsuke Yamamoto

  • +1
    TI__Guru* 77501 points

    Hi Shunsuke-san,

    Shunsuke Yamamoto said:
    Are there any concerns to use OPA170 when the power supplies are below?

    Your supply rails seem to meet the following requirements, where -21 - (-56) = 35Vdc. So the power rail will be acceptable for OPA170. 

    Please pay attention to the linear operating range if you implement the above power rails. Your input Vcm and output voltage swing are with respect to V- and V+ in the op amp. 

    If you have other questions, please let us know. 

    Best,

    Raymond