SBOU243A September 2020 – December 2020 INA2290
The user can either emulate the voltage developed across a sense resistor based on a given set of system conditions with the INA2290EVM, or connect the device inputs to an external shunt. The user can also solder a surface-mount technology (SMT) shunt resistor across the In+ and In– pads, and these inputs can be connected in series with the external system and load. In+ and In- will refer the input of either channel being measured. J1_n for channel 1 and J2_n for channel 2. Also shunt resistor is R1_n for channel 1 and R5_n for channel 2 and will be refered to as Rshunt.
To configure a measurement evaluation without a shunt resistor, follow this procedure:
To configure a measurement evaluation with a shunt resistor, follow this procedure:
Make sure that the equipment (shunt resistor, wires, connectors, and so on) can support the amperage and power dissipation first before you measure the current. Also make sure that the current flowing through J1 or J2 does not exceed 5 A. Failure to do so can result in hot surfaces (> 55 °C), damage to the EVM, or personal injury.