Design of piezoelectric preamplifier

SAURABH SINHA

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

over 12 years ago

0 Neil Albaugh over 12 years ago

Genius 5430 points

Try a charge amplifier.

0 SAURABH SINHA over 12 years ago in reply to Neil Albaugh

Prodigy 20 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.

0 Collin Wells over 12 years ago in reply to SAURABH SINHA

TI__Guru 62085 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

Amplifiers

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Design of piezoelectric preamplifier