A good PCB layout for the ACS108-6SA-TR involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the distance between the device and the decoupling capacitors. A 4-layer PCB with a dedicated power plane and a dedicated ground plane is recommended.
To ensure accurate current measurements, it's essential to follow proper PCB layout guidelines, use a low-impedance current sense resistor, and minimize the noise on the analog input pins. Additionally, calibrate the device using the internal calibration feature or an external calibration method.
The maximum allowable voltage on the VCC pin of the ACS108-6SA-TR is 5.5V. Exceeding this voltage may damage the device. It's recommended to use a voltage regulator or a voltage limiter to ensure the voltage remains within the specified range.
The ACS108-6SA-TR has a built-in thermal shutdown feature that activates when the device temperature exceeds 150°C. To handle this feature, ensure proper heat dissipation, use a heat sink if necessary, and implement a thermal monitoring system to detect and respond to thermal shutdown events.
To filter noise on the analog input pins, use a low-pass filter with a cutoff frequency below 100 kHz. A simple RC filter or a more complex active filter can be used, depending on the specific application requirements.
ACS108-6SA-TR datasheet
by STMicroelectronics
