ADuCM355

Data Sheet Precision Analog Microcontroller with Chemical Sensor Interface ADuCM355 FEATURES Analog input/output 16-bit, 400 kSPS 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 Output range: 0.2 V to 2.4 V (±2.2 V voltage potential to sensor) for 12-bit outputs Two bias potentiostat and TIA amplifiers Ultralow power, 1 μA per amplifier One high speed 12-bit voltage DAC Output range to sensor: −607 mV to +607 mV High speed TIA for impedance measurements Programmable gain amplifier on 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 ±0.00005 μA to ±3000 μA range Programmable load and gain resistors Analog hardware accelerators Digital waveform generator (refer to the ADuCM355 Hardware Reference Manual) DFT and digital filters 2.5 V and 1.82 V on-chip, precision voltage references Internal temperature sensor, ±2°C accurate Impedance measurement range of <1 Ω to 10 MΩ, 0.016 Hz to 200,000 Hz Voltammetry scan rate up to 2000 steps per second Microcontroller 26 MHz Arm Cortex-M3 processor Serial wire port supports code download and debugging 128 kB flash/64 kB of SRAM Security and safety Hardware cyclic redundancy check (CRC) with programmab...