Unit prefix for capacitance

Discussion in 'General Electronics Chat' started by shaun8567, Nov 30, 2010.

  1. shaun8567

    Thread Starter New Member

    Nov 24, 2010
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    I've looked all over trying to find the answer to this, so I figured I'd ask you guys.

    This IC(http://www.zmdi.com/products/sensor-signal-conditioner/zsc31210/) is used to measure small changes in capacitance. In the description, it says that it can have resolution of:

    Now I know that LSB is least significant bit, and pF is a picofarad (10E-12 farads), but what is aF?
     
  2. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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    Ambiguous?

    The prefix "a" may stand for "atto," which is 10E-18. The aF would be one millionth of a picofarad. In between, is the femtofarad (fF). It seems odd that the femtofarad is not mentioned.

    It could also mean that someone just forget to put a space between the indefinite article "a" and F as in, "10E9 nF would be a F." :)

    John
     
  3. bertus

    Administrator

    Apr 5, 2008
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  4. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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    As if there were a yoctodoubt about it.

    John
     
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