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ADUC7033:  Integrated, Precision Battery Sensor For Automotive

Product Details

The ADuC7033 is a complete system solution for battery monitoring in 12 V automotive applications. The device 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 the 12 V battery. An on-chip, low dropout regulator generates the supply voltage for two integrated, 16-bit, Σ-Δ ADCs. The ADCs precisely measure battery current, voltage, and temper-ature to characterize the state of health and charge of the car battery.

A 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 ADuC7033 to the main electronic control unit (ECU) via a local interconnect network (LIN) interface that is integrated on-chip.

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


  • Battery sensing/management for automotive systems


  • High precision ADCs
  • 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 - Please see data sheet for additional information.
  • Voltage channel - Buffered, on-chip attenuator for 12 V battery inputs
  • Temperature channel
    External and on-chip temperature sensor options
  • Microcontroller - Please see data sheet for additional information.
  • Please see data sheet for additional features.

Functional Block Diagram for ADUC7033


Title Content Type File Type
ADuC7033: Integrated, Precision Battery Sensor for Automotive Data Sheet (Rev B, 10/2010) (pdf, 1942 kB) Data Sheets PDF
AN-1138: LINB DLL Programmer´s Guide  (pdf, 153 kB) Application Notes PDF
AN-946: Flash/EE Memory Programming via LIN—Protocol 6  (pdf, 129 kB) Application Notes PDF
AN-891: ADuC703x Series LIN Baud Rate Calculations  (pdf, 86 kB) Application Notes PDF
Using Integrated Precision Analog Microcontrollers to Simplify Data Acquisition System Design
The ins and outs (the I/O) of using Analog Microcontrollers to manage data acquisition applications
Webcasts WEBCAST
Migrating from ADuC7033 to ADuC7039  (pdf, 126 kB) Technical Documentation PDF
1-Chip Solution Advances Automotive Battery Monitoring
(ee Product Center, 10/19/2006)
Product Reviews HTML
Auto Battery Monitors Improve Electrical System Performance
(Electronic Design, 11/1/2006)
Product Reviews HTML
Precision Battery Monitors Prolong Automotive Battery Life
(EETimes, 10/19/2006)
Product Reviews HTML
Precision Analog Microcontrollers—ARM7® and 8051 Series  (pdf, 5834 kB) Overview PDF
Emerging Energy Applications Solutions Bulletin, Volume 10, Issue 4  (pdf, 1496 kB) Solutions Bulletins PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
Sigma-Delta ADC Tutorial
An interactive illustration showing the behavior of an idealized sigma-delta A/D converter.
Utilities and Conversions HTML
Development Tools Software Configurable Products HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

ADUC7033 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADUC7033BSTZ-88 Status: Production 48 ld LQFP 48 Ind Tray, 250 $7.64 $6.72 Y  Material Info Notify Me Purchase Sample
ADUC7033BSTZ-88-RL Status: Production 48 ld LQFP 48 Ind Reel, 2000 - $6.72 Y  Material Info Notify Me Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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