Good day sir, I noticed the REFIN of one device is connected to REFOUT of same device isn't it? This should be 1.8V right? I'm reading 0.19V only I guess my chip was broken.
However I want to ask other question, coz I'm planning to buy another one. About the 8Mhz crystal is it necessary? My application is only a standalone 3-lead ECG, I will not gang another ADAS as slave. Is it okay to put a potentiometer at the RLD loop, the RFB and Rin? Also is the 5k ECG path resistance ok?
Pls. guide me, thanks.