I am trying to do something similar to the previous post: use a ADS8168EVM eval board with an external Ucontroller. In this case, a nucleo-H743Zi2.
I dont want to use the add-on comm board. Ive soldered directly onto the I/O lines: Reset, RVS, SDO0, CLK, SDI, CS
In the previous post, people talk about simply applying external power: 3.3 and 5.3 to DVDD and AVDD. there is no mention in the previous article about removing resistors. I see that the manual for this
dev board, mentions resistors to be removed, if powering externally.
3. Required Modifications for External Power Connection
External Supply Default Voltage Connection Location Required Modification
AVDD 5.3 V P1.1 Remove R18, labeled "AVdd"
GND 0 V P1.2, P1.5 None
AVSS 0 V P1.3 Remove R10, labeled "AVss"
5.5 V 5.5 V P1.4 Remove R5, labeled "5.5V"
DVdd 3.3 V P1.6 Remove R2, labeled "DVdd"
A - is it necessary to do remove the resistors if powering externally?
B - if so, which resistors are these/where? I dont see a layout that shows the resistor locations/labels.
Im doing reads/writes and not getting back the data I expect in SDO-0
