ADUCM330 Datasheet, PDF (1/16 Pages) Analog Devices – Dual channel, simultaneous sampling

Data Sheet
Integrated, Precision Battery Sensor for
Automotive Systems
ADuCM330/ADuCM331
FEATURES
Memory
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
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
LIN 2.2-compatible slave, 100 kb fast download option
SAE J-2602-compatible slave
Low electromagnetic emissions (EME)
High electromagnetic immunity (EMI)
APPLICATIONS
Battery sensing/management for automotive and light
mobility vehicles
Lead acid battery measurement for power supplies in
industrial and medical domains
FUNCTIONAL BLOCK DIAGRAM
SWDIO
SWCLK
IIN+
IIN–
VBAT
VTEMP
GND_SW
PRECISION ANALOG ACQUISITION
PGA
BUF
20-BIT
ADC
RESULT
DIGITAL
ACCUMULATOR COMPARATOR
MUX BUF
20-BIT
ADC
TEMPERATURE PRECISION
SENSOR
REFERENCE
ADuCM330/ADuCM331
LDO
POR
MEMORY
96kB (ADuCM330)/
128kB (ADuCM331)
FLASH,
6kB SRAM,
4kB DATA
CORTEX-M3
PROCESSOR
16MHz
PREC OSC 1%
LPM
1 × GP TIMER
WD TIMER
W/U TIMER
GPIO PORT
SPI PORT
LIN
RESET
LIN
Figure 1.
Rev. C
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