I got a new adis16480amlz and the corresponding eval-adis. I have two doubts,
1. the datasheet of adis16480 says, pin 10, 11, 12, 23 should connect to +3.3v. but the figure below implies JP2 is not shorted, which means pin 23 of ADIS16480 is not connected to +3.3v. I don't understand the rold of pin 23 (VDDRTC) very well. If I don't care about date/time even the main powen is on, can I just leave this pin 23 floating?
2. When I pluged this device onto the eval-adis board, and put the the board on the table. it stands still. but when I powered on, I found the euler angle drift, about 1°/s, and it keeps drifting monotonously. I checked the table, everything is standing still from my eyes. what might caused it?
Appreciating your quick response.