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THS2630: Sinus Sensor Supply

Bernd Hafen1
Prodigy 130 points
Part Number: THS2630
Other Parts Discussed in Thread: TINA-TI

Tool/software:

Hi,

I need to design a low Noise precision "differential" Sinus   2,5V +/- 2V  to source a 1kOhm sensor

OP Single Supply 5V, want to use f.e. THS2630

I want to use a Crystal with about 160kHz like https://www.mouser.de/ProductDetail/Micro-Crystal/CC4V-T1A-153.600kHz-9pF-30PPM-TA-QC?qs=7bTaA%2FLYtSY5BtR%2FXX2VmQ%3D%3D

Could you please sketch a possible solution?

Kind regrads

Bernd

  • 0
    Prodigy 130 points

    Crystal Oscillators and Op-Amps
    How to simulatie in Tina-Ti?

  • 0 in reply to Bernd Hafen1
    TI__Mastermind 30825 points

    Hello Bernd,

      We apologize for the delay in response to your question. From my understanding, you are using a tuning fork that is acting as a piezoelectric sensor which would need to be amplified with a 5V single supply at a DC of 2.5V (mid-supply) and sinus signal of 2V with reference to 2.5V DC at 160kHz.

      Thank you for linking the datasheet of your sensor. I couldn't find the information of the output current range, would you happen to know this information? With this information we can recommend a circuit that uses an amplifier in a transimpedance application to determine you necessary GBW. 

      You can simulate any of our amplifiers by downloading Tina-TI at this link. Then navigating to any of our products folders, each device will have a design & development page where you can find Tina or PSpice reference circuit file to download. The THS2630 Tina-TI reference circuit is located at this link, and I have attached the file to the thread as well.

    slom516a.tsc

    Thank you,
    Sima