Analog Devices, Inc has introduced a fully integrated, 4-kSPS, 24-bit data acquisition system-on-a-chip 'ADuCM360'. The analog microcontroller integrates 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. ADuCM360 can be used in battery powered applications because of the low sleep current.
The ADuCM360 is suitable for applications where the second A/D converter is needed for temperature compensation on the sensor or for dual-sensor applications.
Key features:
1. 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
2. An integrated, 32-bit, 20-MIPs ARM Cortex M3 core
3. Up to 12 programmable sensor excitation current sources from 10µA to 1mA
4. Supply: 1.8 V to 3.3 V
5. Industrial temperature range: -40°C to +125°C
6. Supported with the QuickStart development kit
7. 48-lead, 7 x 7 mm LFCSP package
| 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 developmentsystem | $119 |
The ADuCM360 microcontroller core is a 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.
The ADuCM360 analog sub-system consists of two A/D converters connected to a flexible input multiplexer and each with its own programmable gain amplifier. Both converters can operate in fully differential or single-ended modes.
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.
Data sheet: http://www.analog.com/en/processors-dsp/analog-microcontrollers/aducm360/processors/product.html
Reference circuit notes: http://www.analog.com/en/circuits-from-the-lab/CN0221/vc.html
