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TI Home » TI E2E Community » Support Forums » Amplifiers » /etc... Amplifiers & Other Linear » /etc... Amplifiers & Other Linear Forum » Design of piezoelectric preamplifier
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Design of piezoelectric preamplifier

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SAURABH SINHA
Posted by SAURABH SINHA
on Jan 30 2012 04:35 AM
Prodigy20 points

 I need help in designing a preamplifier for piezoelectric sensor. Capacitace is around 1000 pF and resistance is 1 Gohm .

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  • Neil Albaugh
    Posted by Neil Albaugh
    on Jan 30 2012 10:51 AM
    Genius4945 points

    Try a charge amplifier.

    Regards, Neil P. Albaugh   ex-Burr-Brown

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  • SAURABH SINHA
    Posted by SAURABH SINHA
    on Jan 30 2012 11:19 AM
    Prodigy20 points

    Sir,

    Thanks for your attention. But  can u help me with which op amp to go for and also some practical circuit models.

    Regards.

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  • Collin Wells
    Posted by Collin Wells
    on Jan 30 2012 11:50 AM
    Genius15580 points

    Hello Saurabh,

    There are some other posts on the forum already dedicated to design with charge amplifiers.  Perhaps you could search through some of the old posts for some design tips.  Below is a presentation from one of the other posts by one of our Senior Applications Engineers, Thomas Kuehl.

    7206.Charge amplifiers_PA.ppt

    Also if you download the TINA simulation software, Neil has created a pretty complete library of example circuits including one or more charge amplifier designs.

    Regards,
    Collin Wells
    Precision Linear

    Regards,
    Collin Wells
    Precision Linear Applications

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