How do I design an attenuator using OpAmp?

How can I attenuate a 0-10V signal to a 0-2.5V output using an OpAMp to feed into an ADC?

Thank you

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  • Hi Naji,

    In addition to the considerations that Harry has given, you can also take a look at our AD8275, which is a G=0.2 difference amplifier. With a 0-10V input, it will give you a 0-2V output (or you can level-shift the output) so it won't give you the full 0 to 2.5V range.

    You can also use something like the dual channel AD8279 or AD8273 and have 2 gain stages at 0.5x each in series to get the 0.25x gain.

    Reem

Reply
  • Hi Naji,

    In addition to the considerations that Harry has given, you can also take a look at our AD8275, which is a G=0.2 difference amplifier. With a 0-10V input, it will give you a 0-2V output (or you can level-shift the output) so it won't give you the full 0 to 2.5V range.

    You can also use something like the dual channel AD8279 or AD8273 and have 2 gain stages at 0.5x each in series to get the 0.25x gain.

    Reem

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