ADUCM330
ObsoleteIntegrated, Precision Battery Sensor for Automotive Systems
Part Details
- High precision analog-to-digital converters (ADCs)
- Dual channel, simultaneous sampling
- I-ADC 20-bit Σ-Δ (minimizes range switching)
- VADC/TADC 20-bit Σ-Δ
- Programmable ADC conversion rate from 1 Hz to 8 kHz
- On-chip ±5 ppm/°C voltage reference
- Current channel
- 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
- Voltage channel
- Buffered, on-chip attenuator for 12 V battery input
- Temperature channel
- External and on-chip temperature sensor options
- Microcontroller
- ARM Cortex-M3 32-bit processor
- 16.384 MHz precision oscillator with 1% accuracy
- Serial wire download (SWD) port supporting code download and debug
- Automotive qualified integrated local interconnect network
- (LIN) transceiver
- LIN 2.2-compatible slave, 100 kb fast download option
- SAE J-2602-compatible slave
- Low electromagnetic emissions (EME)
- High electromagnetic immunity (EMI)
- Memory
- 96 kB (ADuCM330)/128 kB (ADuCM331) Flash/EE memory, ECC
- 6 kB SRAM, ECC
- 4 kB data Flash/EE memory, ECC
- 10,000 cycle Flash/EE endurance
- 20 year Flash/EE retention
- In circuit download via SWD and LIN
- On-chip peripherals
- Serial port interface (SPI)
- General-purpose input/output (GPIO) port
- General-purpose timer
- Wake-up timer
- Watchdog timer
- On-chip, power-on reset
- Power
- Operates directly from 12 V battery supply
- Power consumption, 8 mA typical (16 MHz)
- Low power monitor mode
- Package and temperature range
- 32-lead, 6 mm × 6 mm LFCSP
- Fully specified for −40°C to +115°C operation; additional specifications for 115°C to 125°C
- Qualified for automotive applications
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.
APPLICATIONS
- Battery sensing/management for automotive and light mobility vehicles
- Lead-acid battery measurement for power supplies in industrial and medical domains
Documentation
Data Sheet 1
User Guide 2
Application Note 1
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| ADuCM330WFS | LAST TIME BUY | Integrated, Precision Battery Sensor for Automotive Systems |
Tools & Simulations
Evaluation Kits
ADuCM330/ADuCM331 Evaluation Board