ADS1299:   ADS1299:Problem with Input Signal of ADS1299

Part Number: ADS1299

Tool/software:

TI Engineer

Hello!

I connected the circuit in the way shown in the following figure. The external connection of SRB1 is to the reference electrode, and the N terminal is left floating. I input a signal into one of the channels, while the other seven channels do not receive any signal. However, these other seven channels also receive this signal. What could be the reason for this?