The ADuCM330 is a fully integrated, 8 kSPS, data acquisition system that incorporates dual, high performance multichannel sigma-delta (Σ-Δ) ADCs, 32-bit ARM® Cortex™-M3 processor and flash. The ADuCM330 has 96 kB program flash and 4 kB data flash. The ADuCM330 is a complete system solution for battery monitoring in 12 V automotive applications. The ADuCM330 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 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.
The device operates from an on-chip, 16.384 MHz high frequency oscillator that supplies the system clock. This clock is routed through a programmable clock divider from which the core clock operating frequency is generated. The device also contains a 32 kHz oscillator for low power operation.
The analog subsystem consists of an ADC with a programmable gain amplifier (PGA) that allows the monitoring of various current and voltage ranges. It also includes a precision reference on chip.
The ADuCM330 integrates a range of on-chip peripherals that can be configured under core software control as required in the application. These peripherals include a SPI serial input/output communication controller, six GPIO pins, one general-purpose timer, a wake-up timer, and a watchdog timer.
The ADuCM330 is specifically designed to operate in battery-powered applications where low power operation is critical. The microcontroller core can be configured in normal operating mode, resulting in an overall system current consumption of <18.5 mA when all peripherals are active. The device can also be configured in a number of low power operating modes under direct program control, consuming <100 µA. The ADuCM330 also includes a LIN physical interface for single wire, high voltage communications in automotive environments.
The device operates from an external 3.6 V to 18 V (on VDD, Pin 26) voltage supply and is specified over the −40°C to +115°C temperature range, with additional typical specifications at +125°C.
Features and BenefitsI-ADC 20-bit Σ-Δ (minimizes range switching) VADC/TADC 20-bit Σ-Δ Fully differential, buffered input Programmable gain (from 4 to 512) ADC absolute input range: −200 mV to +300 mV Digital comparator with current accumulator feature Buffered, on-chip attenuator for 12 V battery input External and on-chip temperature sensor options ARM Cortex-M3 32-bit processor 16.384 MHz precision oscillator with 1% accuracy Serial wire download (SWD) port supporting code download and debug LIN 2.2-compatible slave, 100 kb fast download option SAE J-2602 compatible slave Low electromagnetic emissions (EME) High electromagnetic immunity (EMI) | Processors & DSPDesign Tools |
| Document | note |
| ADuCM330/ADuCM331: Integrated, Precision Battery Sensor for Automotive Systems Data Sheet (Rev. C) | PDF 383.16 K |
| Document | note |
| AN-946: Flash/EE Memory Programming via LIN—Protocol 6 (Rev. C) | PDF 129 kB |
| Document | note |
| UG-716: ADuCM330/ADuCM331 Hardware Reference Manual | PDF 1.48 M |
| UG-718: EVAL-ADUCM331QSPZ Development System Getting Started Tutorial | PDF 439.31 K |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| ADUCM330WDCPZ Production | 32 ld LFCSP (6x6x.95mm) w/3.8exposed pad | OTH 490 | -40 to 115C | 4.94 | 4.18 | Y |
| ADUCM330WDCPZ-RL Production | 32 ld LFCSP (6x6x.95mm) w/3.8exposed pad | REEL 2500 | -40 to 115C | 0 | 4.18 | Y |
| Part Number | Description | Price | RoHS |
|---|---|---|---|
| EVAL-ADUCM331QSPZ | Evaluation Board | 105.2 | Y |
