Hello,
We want to use the ADS1299 in our design for it's Impedance Measurement feature.
Actually, the design would have 2 differential channels and a reference electrode.
The Vin- of each channel must be kept separated.
2 requirements for the impedance measurement :
- We want to do impedance measurement on each individual electrode, before the acquisition begins;
- We want to do impedance measurement while the acquisition is running, minimally the combined impedance of both probes in a channel.
Can the ADS1299 do this without any external component ?
Any idea, what could be done with the reference electrode to measure it's impedance ?
See the pictures below...