ADUCM355BCCZ

ADUCM355 is an on-chip system that controls and measures electrochemical sensors and biosensors. It is an ultralow power, mixed-signal microcontroller based on the Arm® Cortex™-M3 processor. This device features current, voltage, and impedance measurement capability. It features a 16bit, 400kSPS, multichannel successive approximation register (SAR) analogue-to-digital converter (ADC) with input buffers, built-in antialias filter (AAF), and programmable gain amplifier (PGA). The current inputs include three transimpedance amplifiers (TIA) with programmable gain and load resistors for measuring different sensor types. It is used in applications such as 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.

• Voltage, current, and impedance measurement capability
• Ultralow leakage switch matrix and input mux input buffers, PGA
• Output voltage range from 0.2V to 2.4V (±2.2V voltage potential to sensor) for 12bit outputs
• Two bias potentiostat and TIA amplifiers Ultralow power, 1μA per amplifier
• High speed TIA for impedance measurements, programmable gain amplifier on output
• 2.8V to 3.6V supply and active measurement range, power supply monitor
• Active current consumption is 30μA/MHz for digital section
• Shutdown mode with no SRAM retention is 2μA
• Total harmonic distortion is -84dB typical at (AVDD = DVDD = 2.8V to 3.6V)
• Operating temperature is -40°C to +85°C, package style is 72-terminal land grid array [LGA]

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