I use the LTC2943 to measure voltage.When I use 3-cell battery,we can get evething right. When I use 4-cell battery,I get evrything wrong.Even the config register is wrong.
I don't change the test software and hardware,only change the battery.
the LTC2943 has a 3.6V to 20V Operating Range that should also support 4-Cells Application. What exactly means "everything wrong"? Please provide schematic. Also scope shots of a "good" and "bad" I2C communication are helpful to understand the problem.