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

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

    Product Lifecycle icon-recommended Production

    At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.