Designed for direct interfacing to external 4- to 20-mA loop-powered precision sensors in industrial process control, the 4-ksamples/s, 24-bit data ADuCM360 data acquisition (daq) SoC integrates a dual, high-performance, multi-channel sigma-delta A/D converters, a 32-bit ARM Cortex M3 MCU, and flash/EE memory. This device draws 1-mA of operating current.
The part’s 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 devices analog sub-system consists of two ADCs 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.
Up to 12 programmable sensor excitation current sources from 10 µA to 1 mA can be used with bridge sensor and resistive temperature sensors. Housed in a 48-lead, 7mm x 7mm LFCSP package, the part operates from a 1.8 to 3.3-V supply and over the industrial temperature range of –40° to 125°C. ($7.26 ea/1,000; EVAL-ADuCM360 (QuickStart software development system), $119 — available now)
By Christina Nickolas
Analog Devices , Wilmington , MA
Sales 800-262-5643
www.analog.com
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