ADUC7036 Integrated Precision Battery Sensor for Automotive

The ADuC7036 is a complete system solution for battery monitoring in 12 V automotive applications. These devices integrate 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. Battery sensing/management for automotive systems

Minimizing external system components, the device is powered directly from the 12 V battery. An on-chip, low dropout regulator generates the supply voltage for three integrated, 16-bit, Σ-Δ ADCs. The ADCs precisely measure battery current, voltage, and temperature to characterize the state of health and charge of the car battery.

TA Flash/EE memory-based ARM7™ microcontroller (MCU) is also integrated on-chip. It is used to both preprocess the acquired battery variables and to manage communications from the ADuC7036 to the main electronic control unit (ECU) via a local interconnect network (LIN) interface that is integrated onchip.

Both the MCU and the ADC subsystem can be individually configured to operate in normal or flexible power saving modes of operation.

Features and Benefits

Dual channel, simultaneous sampling, 16-bit, Σ-Δ ADCs
Programmable ADC throughput from 1 Hz to 8 kHz
On-chip 5 ppm/°C voltage reference
Current channel
Fully differential, buffered input
Programmable gain from 1 to 512
ADC input range: −200 mV to +300 mV
Digital comparators, with current accumulator feature
Voltage channel
Buffered, on-chip attenuator for 12 V battery inputs
Temperature channel
External and on-chip temperature sensor options
ARM7TDMI® core, 16-/32-bit RISC architecture
20.48 MHz PLL with programmable divider
PLL input source
On-chip precision oscillator
On-chip low power oscillator
External (32.768 kHz) watch crystal
JTAG port supports code download and debug

96-kB Flash/EE memory, 6-kB SRAM
10,000-cycle Flash/EE endurance, 20-year Flash/EE retention
In-circuit download via JTAG and LIN
SAEJ2602/LIN 1.3/LIN 2.0-compatible (slave) support via UART with hardware synchronization
Flexible wake-up I/O pin, master/slave SPI® serial I/O
9-pin GPIO port, 3× general-purpose timers
Wake-up and watchdog timers
Power supply monitor, on-chip power-on-reset
Operates directly from 12 V battery supply
Current consumption
Normal mode 10 mA at 10 MHz
Low power monitor mode
48-lead, 7 mm × 7 mm LFCSP
Fully specified for −40°C to +115°C operation

Processors & DSP

ARM7 Core Products

Automotive

Powertrain Body and Chassis

Data Sheets

Document	note
ADuC7036: Integrated Precision Battery Sensor for Automotive Data Sheet (Rev. C) ADuC7036: Integrated Precision Battery Sensor for Automotive Systems Silicon Anomaly (Rev C, 3/2011)	PDF 1763 kB

Application Notes

Document	note
AN-1138: LINB DLL Programmer's Guide (Rev. 0)	PDF 153 kB
AN-881: Flash/EE Memory Programming via LIN—Protocol 4 (Rev. 0)	PDF 166 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADUC7036BCPZ Production	48 ld LFCSP 7x7mm (5.1EP)	OTH 260	-40 to 115C	7.64	6.72	Y
ADUC7036BCPZ-RL Production	48 ld LFCSP 7x7mm (5.1EP)	REEL 2500	-40 to 115C	0	6.72	Y
ADUC7036CCPZ Production	48 ld LFCSP 7x7mm (5.1EP)	OTH 260	-40 to 115C	7.64	6.72	Y
ADUC7036CCPZ-RL Production	48 ld LFCSP 7x7mm (5.1EP)	REEL 2500	-40 to 115C	0	6.72	Y