ADI’s ADuCM330 / ADuCM331 are ideal precision sensing systems for lead acid battery systems found in cars, trucks, and light vehicles such as ATVs and lawn tractors, as well as battery systems found in industrial and medical applications for sensing in power backup systems. They are fully integrated, 8 ksps, data acquisition systems that incorporate dual, high-performance multichannel sigma-delta (Σ-Δ) ADCs, 32-bit ARM Cortex-M3 processors and Flash.

The ADuCM330 has 96 kB whereas the AduCM331 has 128 kB program Flash and 4 kB data Flash. The ADuCM330 / AduCM331 are a complete system solution for battery monitoring in 12 V automotive applications. The sensing systems integrate all the required features to precisely and intelligently monitor, process, and diagnose 12 V battery parameters including battery current, voltage, and temperature over a wide range of operating conditions. Minimizing external system components, the devices are powered directly from a 12 V battery. On-chip, low-dropout (LDO) regulators generate the supply voltage for two integrated Σ-Δ ADCs. The ADCs precisely measure battery current, voltage, and temperature to characterize the state of the health and the charge of the car battery.