Battery Manager And DAQ IC Resets The Accuracy Bar

The multi-channel AS8510 debuts as a data acquisition front-end IC for automotive battery current, voltage, and temperature sense applications as well as general sensor interface chores. Touting the highest accuracy available, the device features unique zero offset for simultaneous voltage, current, and temperature measurement in conventional, hybrid, or electric vehicles. It is also said to be the first to feature a 16-bit dual-channel ADC plus PGA architecture with less than one LSB of offset and noise. Other features include two independent analog input channels with 16-bit ADCs, each with individually programmable sampling rates. The AS8510 operates with a current shunt sensor in a 12V system either at a battery’s ground terminal or at the plus terminal in conjunction with a dedicated level shift companion IC. It can also be used as a general-purpose sensor interface for precise measurement of signals close to ground. Fully differential inputs allow the AS8510 to capture differential signals with 300 mV of common mode above ground and 160 mV below ground. Additionally, the AS8510 draws 40 µA in standby mode. Available in a SSOP20 package, the device operates from 3.3V and specifies an ambient operating temperature range of -40°C to +125°C. AUSTRIAMICROSYSTEMS USA INC., Raleigh, NC. (919) 676-5292.