We have ADS1299 based custom board. We want to measure the impedance of patients body. For that we are using AC lead off detection functionality of ADS1299.
As datasheet tells AC lead off current source accuracy is ±20%. So we have implemented a logic to calibrate the current source on channel one for better accuracy.
We have some queries related to AC lead off detection -
1. Does ADS1299 has current source available on each channel? (8 current sources)
2. Do we need to perform current source calibration on each channel for better accuracy?