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Doug Bartow ,

Analog Devices’ Analog Microcontroller with ARM Cortex M3 and Dual 24-Bit Sigma-delta A/D Converters Offers Highest Accuracy, Lowest Power

ADuCM360 draws 1-mA operating current for full operation of processor and analog front-end to enable 4- to 20-mA loop-powered smart sensor applications.

Jun 4 2012 - Norwood, MA
  • Analog Devices, Inc. (NASDAQ: ADI), the data converter market share leader*, today introduced the ADuCM360, a fully integrated, 4-kSPS, 24-bit data acquisition system-on-a-chip incorporating dual, high-performance, multi-channel sigma-delta A/D converters, a 32-bit ARM CortexTM M3 MCU, and flash/EE memory. This device draws 1-mA of operating current and is designed for direct interfacing to external 4- to 20-mA loop-powered precision sensors in industrial process control. Low sleep current further enhances ADuCM360 use in battery powered applications.

    The ADuCM360 microcontroller core is a low power 32-bit ARM RISC machine and incorporates a flexible 11-channel DMA (direct memory access) controller supporting wired (SPI, UART, I²C) communication peripherals. In addition there are 128k bytes of non-volatile flash/EE and 8k bytes of SRAM, all integrated on-chip.

    The ADuCM360 analog sub-system consists of two A/D converters connected to a flexible input multiplexer (with up to 11 input channels) and each with its own programmable gain amplifier. Both converters can operate in fully differential or single-ended modes. The ADuCM360 is ideal for applications where the second A/D converter is needed for temperature compensation on the sensor or for dual-sensor applications. Available in August will be the ADuCM361, which contains all the features of the ADuCM360 but includes only one A/D converter.

    “The ADuCM360 consumes just 1 mA in full operation, with both A/D converters and programmable gain amps active, making them ideal for use in 4- to 20-mA loop-powered systems,” said Leo McHugh, director Precision A/D Converters, Analog Devices. “The ADuCM360/361 delivers the industry’s highest accuracy analog conversion and more processing-per-mW of power than any other analog microcontroller solution for industrial smart sensor applications.”

    ADuCM360 Analog Microcontroller Key Features and Benefits

    On-chip factory firmware supports in-circuit serial download via a serial wire interface (2-pin JTAG system) and UART while non-intrusive emulation is also supported via the serial wire interface. These features are incorporated into a low-cost QuickStart™ Development Kit supporting this precision analog microcontroller family.

    This new data acquisition system is available in a 48-lead, 7mm x 7mm LFCSP package and operates from a 1.8-V to 3.3-V supply.

    Pricing, Availability and Complementary Products

    Samples and the QuickStartTM Development Kits are currently available.

    Part No Availability A/D Converter Resolution (Bits) ADCs Pricing (1K)
    ADuCM360 Now 24 2 $7.26
    ADuCM361 August 24 or 16 1 $3.95
    EVAL-ADuCM360 Now QuickStart Software development system $119

    Complementary components include ADI’s AD5700 HART modem IC, a single-chip implementation for encoding and decoding the HART communications protocol, and the AD5421 16-bit D/A converter for loop-powered smart transmitter applications.

    • View the ADuCM360 product page, order samples, and download the data sheet: http://www.analog.com/en/processors-dsp/analog-microcontrollers/aducm360/processors/product.html
    • Access the Circuits from the Lab™ reference circuit note to learn how to integrate the ADuCM360 into your design, visit: http://www.analog.com/en/circuits-from-the-lab/CN0221/vc.html
    • Get support at ADI’s EngineerZone™ online technical support community: http://ez.analog.com/community/analog-microcontrollers/aduc-cortex-m3
    • A complete, single-chip analog front-end including input signal conditioning, dual PGAs, voltage reference, dual 24-bit sigma-delta A/D converters and a buffered voltage-output D/A converter resulting in higher accuracy, reduced board space and lower power consumption.
    • An integrated, low power, 32-bit, 20-MIPs ARM Cortex M3 core enables advanced diagnostics at a sensor node – wired or wireless – for higher accuracy measurements.
    • Up to 12 programmable sensor excitation current sources from 10µA to 1mA can be used with bridge sensors and resistive temperature sensors.
    • The on-chip D/A converter can be used for 4- to 20-mA loop control.
    • Supported with the low-cost QuickStartTM Development Kit, which includes sample code, function libraries, compilers and emulators for faster and less expensive software development.
    • Specified for a wide industrial temperature range of –40°C to +125°C
  • About Analog Devices
  • Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices is included in the S&P 500 Index.
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