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Capability of EVAL-AD7147

I'm new to analog circuits so forgive me if this is a simple question. I'm interested in using a EVAL-AD7147 to measure some external capacitors. From what I saw in the data sheet the CIN pins have already been linked to the example capacitors on board. Is it possible to connect them to external capacitors?

Thank you for your assistance.

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  • Thank you for your informative answer.

    I believe the AD7147 I am referring to has a SPI-interface instead of a I2C one (the I2C model is called EVAL-AD7147-1).

    I know that the sensor capacitor would be grounded on one electrode and the other connected to one of the CIN pin of the chip. Is that what J1 or J2 does? How about the shield line?

    My application is an array of capacitors which is formed with liquid metal embedded in polymer film. My goal is to read these noisy capacitors. They have bare wirings coming out of each electrode. Each has a representative capacitance of 1 uF. I am also looking for a way to properly connect them to the PCB.

    Thanks!

Reply
  • Thank you for your informative answer.

    I believe the AD7147 I am referring to has a SPI-interface instead of a I2C one (the I2C model is called EVAL-AD7147-1).

    I know that the sensor capacitor would be grounded on one electrode and the other connected to one of the CIN pin of the chip. Is that what J1 or J2 does? How about the shield line?

    My application is an array of capacitors which is formed with liquid metal embedded in polymer film. My goal is to read these noisy capacitors. They have bare wirings coming out of each electrode. Each has a representative capacitance of 1 uF. I am also looking for a way to properly connect them to the PCB.

    Thanks!

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