Amplifying micro/nano Amp signals

Discussion in 'General Electronics Chat' started by ping222, Feb 24, 2014.

  1. ping222

    Thread Starter New Member

    Nov 7, 2013
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    Hello guys,

    I need to amplify a micro/nano Amp current signal. Then I need to convert this amplified signal to a voltage so a 10 bit analogue to digital converter can read it. I assume I would use some sort of current amplifier followed by measuring the output voltage across a resistor. Is there anything I am missing that the experienced/clever heads in this forum can point out! Thanks in advance,

    Ping.

    p.s if anyone knows of any good current amplifiers please suggest, thanks.
     
  2. MrChips

    Moderator

    Oct 2, 2009
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    Before anyone can suggest a solution they would need to know more about the source of this μA/nA signal?

    What is the device?
     
  3. ping222

    Thread Starter New Member

    Nov 7, 2013
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    The source is a photodiode being operated in reverse bias mode. Thanks.
     
  4. crutschow

    Expert

    Mar 14, 2008
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    What is the highest frequency of the signal?
     
  5. MrChips

    Moderator

    Oct 2, 2009
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  6. w2aew

    Member

    Jan 3, 2012
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    What you're looking for is a transimpedance amplifier.
     
  7. ping222

    Thread Starter New Member

    Nov 7, 2013
    13
    0
    Thanks for that guys. Yes I have stumbled on a transimpedance amplifier since, so that is what I should stick too!

    crutschow, the frequency of the signal is basically just on/off from time to time, i.e not high frequency.
     
  8. tindel

    Active Member

    Sep 16, 2012
    568
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    Last edited: Feb 26, 2014
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