ZHCS793C March 2012 – January 2021 INA282-Q1 , INA283-Q1 , INA284-Q1 , INA285-Q1 , INA286-Q1
PRODUCTION DATA
Connect the input pins to the sensing resistor using a Kelvin or 4-wire connection. This connection technique makes sure 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 causes significant measurement errors.
Place the power-supply bypass capacitor as close as possible to the supply and ground pins. TI recommends a bypass capacitor with a value of 0.1 uF. Add additional decoupling capacitance to compensate for noisy or high-impedance power supplies.