Interfacing Piezoresistive Vibration Sensor To ADC

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jenda

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vibration sensor adc

Hi
Does anyone have a nice front end circuit to connect a piezo element to an ADC. I think it should include an amplifier as well as limiter circuitry to clamp the high peak voltages that can occur.

Thanks, j
 

Hi jenda,

You can try the ad7730 from Analog Devices (AD7730 - CMOS, 24-Bit Sigma-Delta, Bridge Transducer ADC for Load Cell Applications). It works fine with piezoresistive sensor and it is very easy to use. You have already the ADC inside the chip :

https://www.analog.com/en/prod/0,2877,AD7730,00.html

Have a good electronic design !

See you,

Elvis

jenda said:
Hi
Does anyone have a nice front end circuit to connect a piezo element to an ADC. I think it should include an amplifier as well as limiter circuitry to clamp the high peak voltages that can occur.

Thanks, j
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