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ADUC7034:  Integrated Precision Battery Sensor for Automotive

Product Details

The ADuC7034 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.


  • Battery sensing/management for automotive systems
  • Data Sheet, Rev. A, 8/09


    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
      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


    • 32-kB Flash/EE memory, 4-kB SRAM
    • 10,000-cycle Flash/EE endurance, 20-year Flash/EE retention
    • In-circuit download via JTAG and LIN

    On-chip peripherals

    • 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

    Package and temperature range

    • 48-lead, 7 mm x 7 mm LFCSP
    • Fully specified for −40°C to +115°C operation

    Functional Block Diagram for ADuC7034


    Title Content Type File Type
    ADuC7034: Integrated Precision Battery Sensor for Automotive Data Sheet (Rev B, 05/2010) (pdf, 1826 kB) Data Sheets PDF
    AN-881: Flash/EE Memory Programming via LIN—Protocol 4  (pdf, 166 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
    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
    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

    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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