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The RFB of the LTC2757

Category: Datasheet/Specs
Product Number: LTC2757

Q1:The RFB of the LTC2757 is 10KΩ (TYP) in the table specs, but can it be changed by setting the output voltage span?

Q2:In that case, could you tell me the reference value?

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  • Hi  

    Q1:The RFB of the LTC2757 is 10KΩ (TYP) in the table specs, but can it be changed by setting the output voltage span?

    The resistance of RFB is constant regardless of the output voltage span. 

    Not sure what you meant by Q2, could you elaborate?

    Best regards,

    Ian

  • Used for connection of data sheet P1.
    It will be used in applications that emphasize responsiveness.
    The time constant is determined by Rfb and 27pF of the external capacitor.

    When I checked the waveform, I thought that Rfb was different because it did not match the calculated value.

    There is a link on the product introduction website, and if you look at the explanation of the LTC2757 introduction video, it explains that Rfb changes depending on the output span setting.

    www.analog.com/.../5579239875001.html

    I'm sorry to trouble you, but could you please check again?

Reply
  • Used for connection of data sheet P1.
    It will be used in applications that emphasize responsiveness.
    The time constant is determined by Rfb and 27pF of the external capacitor.

    When I checked the waveform, I thought that Rfb was different because it did not match the calculated value.

    There is a link on the product introduction website, and if you look at the explanation of the LTC2757 introduction video, it explains that Rfb changes depending on the output span setting.

    www.analog.com/.../5579239875001.html

    I'm sorry to trouble you, but could you please check again?

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