• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 29 subscribers
  • Views 979 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DRV2700EVM: Analog input question, Driving a Piezo with DRV2700EVM

Amin ZAND VAKILI
Prodigy 10 points
Part Number: DRV2700EVM

Hi all,

I would like to use DRV2700EVM to move a Pizo plate. I am making a "tactile stimulator" device where subjects place their hands on the piezo and detect a brief tap on their finger. I have a LabJack device that can produce an analog output with the range of 0-5 V. I would like to feed this into the piezo driver and would like the driver to (just) amplify the analog input and drive the Pizeo with it. The input is going to be a single square pulse, the output does not need to be a square, I can live with some filtering if turning off the filter is too hard.

I tried to follow the instructions but have not been able to set the jumpers and settings in GUI to get this going. Any help would be very appreciated. Needless to say, I am not an engineer so bear with me :)

Thanks a lot,

AZ

  • 0
    TI__Prodigy 590 points
    Hey AZ,

    For initial testing I would do next setup (I suppose you are using USB to power your device): JP10 to USB, JP11 to USB, JP5 and JP6 open, JP9 JP8 and JP7 to PU, JP13 open, JP12 connected, I2C open.

    Depending on the output voltage you would like, you can switch between 50Vpp and 200Vpp, you can connect feedback resistors J2 J3 and J4. If you connect them all you will get full scale output.

    Connect your LabJack device straight to IN+ and IN- testpoints, if this is a pure analog signal you dont need any filtering.

    I would also suggest reading the User Guide of DRV2700EVM in order to better understand what are those jumpers doing.

    If you will have any questions, please let us know!

    Best regards,
    Marko