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M.Mahdi.T

Pmod IA AD5933 measurement speed

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Posted (edited)

Hi everyone,

I am planning to use Pmod IA AD5933 with Arduino or raspberry pi for impedance measurement in single excitation frequency (50 kHz or 100 kHz) over time.

before starting, I would like to know what is the fastest measurement speed (maximum impedance sampling rate) I can get with this board in a constant AC frequency.

does anybody have experience doing this?

best,

Mahdi

 

Edited by M.Mahdi.T

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2 answers to this question

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Hi @M.Mahdi.T,

Welcome to the Digilent Forums!

We typically do not test the max throughput metric when validating our products.

Looking at the AD5933 datasheet here  the Pmod IA would be limited to 1 MSPS due to the on board ADC.

The main bottleneck for throughput to a host board will be the I2C communication which runs at 400 KHz.

Here is a good forum thread for using the Pmod IA with the Raspberry PI with code and hints for use , setup and calibration. Here is the resource center for the Pmod IA which has the Raspberry PI code as well.

best regards,

Jon

 

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Posted (edited)

thank you.

I am not a very sophisticated programmer, but anyway I will let you know what sampling rate I achieved after doing it. :)

Edited by M.Mahdi.T

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