ADUCM355BCCZ Description
Electrochemical and biosensors are controlled and measured by the ADuCM355 on-chip system. An ultralow power, mixed-signal microcontroller called the ADuCM355 is built around the Arm Cortex-M3 processor. The tool has the ability to measure current, voltage, and impedance.
A 16-bit, 400 kSPS, multichannel successive approximation register (SAR) analog-to-digital converter (ADC) with input buffers, an integrated antialias filter (AAF), and a programmable gain amplifier are included in the ADuCM355 (PGA). Three transimpedance amplifiers (TIA) with configurable gain and load resistors are included in the current inputs to measure various sensor types. Two low power amplifiers built expressly for potentiostat functionality are also part of the analog front end (AFE), which keeps an external electrochemical sensor's bias voltage constant. These two amplifiers' noninverting inputs are managed by on-chip, dual output digital-to-analog converters (DACs). A high speed DAC and output amplifier made to produce an ac signal are included in the analog outputs.
ADUCM355BCCZ Features
2.8 V to 3.6 V supply and active measurement range
Power supply monitor
Active current consumption: 30 μA/MHz for digital section
Hibernate with bias to external sensor: 8.5 μA
Shutdown mode with no SRAM retention: 2 μA
Output range to sensor: ?607 mV to +607 mV
High speed TIA for impedance measurements
Programmable gain amplifier on output
26 MHz Arm Cortex-M3 processor
Serial wire port supports code download and debugging
128 kB flash/64 kB of SRAM
ADUCM355BCCZ 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
