ams AS8510 Copper Shunt Reference Design
ams AS8510 Copper Shunt Reference Design provides a blueprint to achieve linear current measurement up to 100A with an accuracy of ±1% by monitoring voltage drop across a PCB's copper track. The reference design takes advantage of the very high sensitivity and precision of the AS8510, an integrated data acquisition front end which provides two measurement channels. By using a new technique involving the ams AS8510 data-acquisition front end, designers of Battery Management Systems (BMS) can eliminate the precision shunt resistor normally used in current-sensing applications. The ams AS8510 Copper Shunt Reference Design is intended for a current range of ~40A operation and 60A maximum. Two measurement paths are provided. The left one uses the AS8510's internal temperature sensor and the right one uses a fine copper meander trace to sense temperature.