A good PCB layout for the A1104LUA-T involves keeping the sense lines (VCC, GND, and SENSE) as short as possible, using a ground plane, and minimizing the distance between the device and the sense resistor. A 4-layer PCB with a dedicated ground plane is recommended.
To ensure accurate current sensing, use a sense resistor with a low temperature coefficient, keep the sense lines short and away from noise sources, and use a low-noise power supply. Also, ensure the sense resistor is properly matched to the device's input range.
The maximum allowable voltage on the VCC pin of the A1104LUA-T is 5.5V. Exceeding this voltage may damage the device.
To minimize EMI, use a shielded cable for the sense lines, keep the sense lines away from noise sources, and use a common-mode choke or ferrite bead on the sense lines. Also, ensure the PCB layout is designed to minimize radiation.
The typical response time of the A1104LUA-T is 1.5 μs. This is the time it takes for the device to respond to a change in the current being measured.
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A1104LUA-T Overview
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