I wonder what I could be doing wrong.
This discussion focuses on the Vbus measurement of the INA226. No load current is flowing through the Rsense resistor.
An INA226, soldered into a prototype / development board, is exhibiting error ranging from 1% to 15%
The Input voltages range from about 3V to 17V, with lower voltages being worst.
Another INA226, on yet another protoboard, exhibits error of about 0.75%, still in excess of the 0.1% max in the data sheet.
OK. What could I be doing wrong? Is it possible tht this device has a glass jaw, and solering it into place damages it?
These cases are purposely kept simple. Thanks in advance.