I think you should have seen a lot of these problems because this chip is a chip for measuring human impedance.
Hi
For BCM measurement, I set it as below picture(PICTURE1, PICTURE2)
and To measure human impedance, i connected the AFE4300EVM-PDK and the electrodes as shown below(PICTURE3, PICTURE4).
you can see the yellow cable connection.
As i measure up over the electrode, the voltage value corresponding to the impedance continues to decrease with time!!! (You can see the PICTURE5)
After calibration, the impedance difference between the initial voltage value and the last voltage value corresponds to about 50 ohms. it is impossible.
When connecting to a passive element(Resistor,Capacitor), the voltage value is constant over time.
Only when a person is up, the voltage continues to decrease with time.
I work for companies that make medical devices that use impedance.
I would like to use the AF4300 for measuring human impedance, but I can not solve this problem.
I think you should have seen a lot of these problems because this chip is a chip for measuring human impedance.
May I ask for your advice?
Picture. 1
picture.2
picture 3
picture 4
picture 5