Piezo - Starting point

[_i386sx25_]

I need to drive piezoelectric transducer having 1.6MHz resonant frequency, 30V max rating. I do lots of search on google and edaboard and coudn't find much useful information.

All I understand it needs a sinusoidal waveform , a kind of tuned amplifier with mosfet should be used. I really appriciate any information on the subject. Desparately looking for related books and web sites.

 

[flatulent]

These items are usually custom made. Only the standard intrusion detector types are off the shelf.

 

[_i386sx25_]

Sorry my mistake. I need to drive this type of piezo. I have the piezo already. I'm asking about the driving circuit ...

 

[flatulent]

Try a square wave from a logic source.

 

[pseudockb]

Actually, I have done a bit of study on piezoresistive transducer interface ckt recently. I am able to find lots of such circuit from IEEE and Biosensors & Bioelectonics.

For example,this paper "Cantilever-Based Biosensors in CMOS Technology", Proceedings of the Design, Automation and Test in Europe Conference and Exhibition (DATE’05), shows two interface ckt for the transducer. Hope that helps you.

 

[_i386sx25_]

Although the paper incudes only block diagrams of the circuits , at least i know a magazine to check. Thanks.