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  5. ADUC7129


Features and Benefits

  • Analog I/O
    Multi-Channel, 12-bit, 1MSPS ADC
    Up to 14 analog-to-digital converter (ADC) channels
    Fully differential and single-ended modes
    0 to VREF Analog Input Range
    10-bit digital-to-analog converter (DAC)
    32-bit 21 MHz direct digital synthesis (DDS)
    Current-to-Voltage (I/V) Conversion
    Integrated second-order low-pass filter (LPF)
    DDS Input to DAC
    100 Ω line driver
  • On-Chip Voltage Reference
  • On-Chip Temperature Sensor (±3°C)
  • Voltage Comparator
  • Microcontroller
    ARM7TDMI Core, 16/32-bit RISC architecture
    JTAG Port supports code download and debug
    External Watch crystal/ Clock Source
    41.78 MHz PLL with 8-way programmable divider
    Optional trimmed on-chip oscillator
  • See datasheet for additional features

Product Details

The ADuC7128 / ADuC7129 are fully integrated, 1 MSPS, 12-bit data acquisition systems incorporating a high performance, multi-channel analog-to-digital converter (ADC), DDS with line driver, 16-/32-bit MCU, and Flash/EE memory on a single chip.

The ADC consists of up to 14 single-ended inputs. The ADC can operate in single-ended or differential input modes. The ADC input voltage is 0 to VREF. Low drift band gap reference, temperature sensor, and voltage comparator complete the ADC peripheral set.

The ADuC7128 / ADuC7129 integrate a differential line driver output. This line driver transmits a sine wave whose values are calculated by an on-chip DDS or a voltage output determined by the DACDAT MMR.

The devices operate from an on-chip oscillator and PLL, generating an internal high frequency clock of 41.78 MHz. This clock is routed through a programmable clock divider from which the MCU core clock operating frequency is generated.

The microcontroller core is an ARM7TDMI®, 16-/32-bit reduced instruction set computer (RISC), offering up to 41 MIPS peak performance. There are 126 kB of nonvolatile Flash/EE provided on-chip, as well as 8 kB of SRAM. The ARM7TDMI core views all memory and registers as a single linear array.

On-chip factory firmware supports in-circuit serial download via the UART serial interface port, and nonintrusive emulation is also supported via the JTAG interface. These features are incorporated into a low cost QuickStart development system supporting this MicroConverter® family.

The parts operate from 3.0 V to 3.6 V and are specified over an industrial temperature range of −40°C to +125°C. When operating at 41.78 MHz, the power dissipation is 135 mW. The line driver output, if enabled, consumes an additional 30 mW.

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.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
ADUC7129BSTZ126 Material Declaration Reliability Data 80-Lead LQFP (12mm x 12mm x 1.4mm)
ADUC7129BSTZ126-RL Material Declaration Reliability Data 80-Lead LQFP (12mm x 12mm x 1.4mm)
Wafer Fabrication Data

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