Analog Devices Inc. ADUCM356 Precision Analog Microcontrollers
Analog Devices Inc. ADUCM356 Precision Analog Microcontrollers feature low-power and have an Arm® Cortex®-M3 processor. The Analog Devices Inc. ADUCM356 controls and measures electrochemical sensors featuring current, voltage, and impedance measurements. The device includes a 16-bit, 400kSPS SAR ADC with input buffers, a built-in antialias filter, and a programmable gain amplifier. It also has three trans-impedance amplifiers for different sensor types and two low-power amplifiers for potentiostat capability. Dual output DACs control the noninverting inputs, and there's a high-speed DAC and output amplifier for generating an AC signal.
Features
- Analog input/output
- 16-bit, 400kSPS ADC
- Voltage, current, and impedance measurement capability
- Internal and external current and voltage channels
- Ultralow leakage switch matrix and input mux
- Input buffers, PGA
- Voltage DACs
- Two dual-output voltage DACs
- 0.2V to 2.4V (±2.2V voltage potential to the sensor) for a 12-bit output range
- Two bias potentiostat and TIA amplifiers
- Ultralow power, 1μA per amplifier
- One high-speed 12-bit voltage DAC
- −607mV to +607mV output range to sensor
- High-speed TIA for impedance measurements
- Programmable gain amplifier on the output
- Amplifiers, accelerators, and references
- Two low-power, low-noise amplifiers
- Suitable for potentiostat bias in electrochemical sensing
- Two low-power, low-noise TIAs
- Suitable for measuring sensor current output in the ±0.00005μA to ±3000μA range
- Programmable load and gain resistors
- Analog hardware accelerators
- Digital waveform generator (refer to the ADuCM356 Hardware Reference Manual)
- DFT and digital filters
- 2.5V and 1.82V on-chip precision voltage references
- Two low-power, low-noise amplifiers
- Internal temperature sensor, ±2°C accurate
- Impedance measurement range of <1Ω to 10MΩ, 0.016Hz to 200,000Hz
- Voltammetry scan rate up to 2000 steps per second
- Microcontroller
- 26MHz Arm Cortex-M3 processor
- Serial wire port supports code download and debugging
- 256kB flash/64kB of SRAM
- Security and safety
- Hardware cyclic redundancy check (CRC) with programmable polynomial generator (refer to the ADuCM356 Hardware Reference Manual)
- Read and write protection of user flash
- On-chip peripherals
- UART, I2C, and SPI serial input/output
- Up to 17 GPIO pins
- External interrupt option
- General-purpose, wake-up, and watchdog timers
- Power
- 2.8V to 3.6V supply and active measurement range
- Power supply monitor
- 30μA/MHz for the digital section active current consumption
- 8.5μA hibernate with a bias to an external sensor
- 2μA shutdown mode with no SRAM retention
- Package and temperature range
- 6mm × 5mm, 72-lead LGA package
- Fully specified for −40°C to +85°C ambient operation
Applications
- Gas detection
- Food quality
- Environmental sensing (air, water, and soil)
- Blood glucose meters
- Life sciences and biosensing analysis
- Bioimpedance measurements
- General amperometry, voltammetry, and impedance spectroscopy functions
SIMPLIFIED BLOCK DIAGRAM
Publicado: 2023-11-06
| Actualizado: 2023-11-27