I have a custom PCB with an LTC6811 and 2 LTC3300 and connected 12 18650 cells.
The measurement at the LTC6811 input pins is very different from the readings of the ADC registers.
Both the voltages actually measured (with a digital voltmeter) and read out from the LTC6811 are stable.
i am using RC filters at the inputs with 100Ohm/10nF as suggested and measuring voltages directly at the LTC input pins.
5V are supplied from a L5017MR buck converter located 3cm away from the LTC6811.
I tried with different sampling speeds but the result remains unchanged. What can be the reason ?
The two LTC3300 balancers are communicating via GPIO and both read status 0x000F which seems ok to me.
I will try with fixed resistors and a constant power supply tomorrow but i doubt the result will be much better/different.
Any advice welcome !