LTC6811-1
Production
The LTC6811 is a multicell battery stack monitor that measures up to 12 series connected battery cells with a total measurement error of less than 1.2mV...
Datasheet
LTC6811-1 on Analog.com
The datasheets of the LTC6811 mentions an attenuation of 1:20 for the sum of all cells voltage measurement.
How exact is this 1:20?
Over 7000 samples we see a very small but constant measurement error that could be explained if the attenuation is 1:19.98 instead instead of 1:20.
Rounding this number results in 1:20 so the datasheet matches the observations.
I'am curious to what the exact attentuation is by design, or if we need to look into other causes for this very small error.