Connect the input pins to the sensing resistor using a kelvin or 4-wire connection. This connection technique ensures that only the current-sensing resistor impedance is detected between the input pins. Poor routing of the current-sensing resistor commonly results in additional resistance present between the input pins. Given the very low ohmic value of the current resistor, any additional high-current carrying impedance can cause significant measurement errors.
Place the power-supply bypass capacitor as close as possible to the IN+ pin and ground pins. TI recommends using a bypass capacitor with a value of 0.1 μF. Additional decoupling capacitance can be added to compensate for noisy or high-impedance power supplies.