3 Hardware

The INA281EVM provides basic functional evaluation of the INA281. The fixture layout is not intended to be a model for the target circuit, nor is it laid out for electromagnetic compatibility (EMC) testing. The INA281EVM consists of one PCB with an option to cut out ten individual PCBs, one for each of the five gain options (1 to 5) and the two different pin outs (A and B) listed in Table 1. Be aware that because of the different pinouts of the A and B versions, the layouts and test point locations are also different. Each of the PCB cutouts consists of one INA281Xn device (where X is A or B and n is 1, 2, 3, 4, or 5), and test points and sockets for external hardware connections, as well as pads to solder down optional circuitry.