The ADuCM331 is a fully integrated, 8 kSPS, data acquisition system that incorporates dual, high performance multichannel sigma-delta (?-?) ADCs, 32-bit ARM® Cortex™-M3 processor and flash. The ADuCM331 has 128 kB program flash. and 4 kB data flash. The ADuCM331 is a complete system solution for battery monitoring in 12 V automotive applications. The ADuCM331 integrates all of 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 device is powered directly from a 12 V battery. On-chip, low dropout (LDO) regulators generate the supply voltage for two integrated ?-? ADCs. The ADCs precisely measure battery current, voltage, and temperature to characterize the state of the health and the charge of the car battery.
- High precision analog-to-digital converters (ADCs)
- Programmable ADC conversion rate from 1 Hz to 8 kHz
- On-chip ±5 ppm/°C voltage reference
- Voltage channel
- Buffered, on-chip attenuator for 12 V battery input
- Temperature channel
- External and on-chip temperature sensor options
