AD5941BCPZ-RL7

Technical Specifications

Product Introduction

Features

• Analog Input:
• 16-bit ADC with 800 kSPS and 1.6 MSPS options
• Voltage, current, and impedance measurement capability
• Internal and external current and voltage channels
• Ultralow leakage switch matrix and input multiplexer
• Input buffer and programmable gain amplifier
• Voltage DAC:
• Dual-output voltage DAC, output range 0.2 V to 2.4 V
• 12-bit VBIAS0 output for potentiostat biasing
• 6-bit VZERO0 output for TIA biasing
• Ultralow power: 1 µA
• 1 high-speed 12-bit DAC
• HSDAC output range: ±607 mV
• Programmable gain amplifier at HSDAC output, gain settings of 2 and 0.05
• Amplifiers, Accelerators, and Reference:
• 1 low-power, low-noise potentiostat amplifier for potentiostat biasing in electrochemical sensing
• 1 low-noise, low-power TIA for sensor current output measurement
• Range: 50 pA to 3 mA
• Programmable load and gain resistors for sensor output
• Analog Hardware Accelerator:
• Digital waveform generator
• Receive filter
• Complex impedance measurement (DFT) engine
• 1 high-speed TIA for wideband input signals from 0.015 Hz to 200 kHz
• Digital waveform generator for sinusoidal and trapezoidal waveform generation
• 2.5 V and 1.82 V internal reference voltage sources
• System-Level Power Saving:
• Fast power-up and power-down analog blocks for duty cycle control
• Programmable AFE sequencer to minimize host controller workload
• 6 kB SRAM for preprogrammed AFE sequences
• Ultralow power potentiostat channel: 6.5 µA current consumption when powered up with all other blocks in sleep mode
• Intelligent Sensor Synchronization and Data Acquisition:
• Precise periodic control of sensor measurements
• Sequencer-controlled GPIO
• On-Chip Peripherals:
• SPI serial I/O
• Wakeup timer
• Interrupt controller
• Power Supply:
• 2.8 V to 3.6 V supply
• 1.82 V I/O compatible
• Power-on reset
• Sleep mode with low-power DAC and potentiostat amplifier powered up to maintain sensor bias
• Package and Temperature Range:
• AD5940: 3.6 mm × 4.2 mm, 56-ball WLCSP
• AD5941: 7 mm × 7 mm, 48-lead LFCSP
• AD5940 and AD5941 fully specified over −40°C to +85°C operating temperature range
• AD5941W fully specified over −40°C to +105°C operating temperature range
• AEC-Q100 qualified for automotive applications

Applications

• - Electrochemical measurement - Electrochemical gas sensor measurement - Potentiostat/Amperometry/Voltammetry/Cyclic voltammetry - Bioimpedance applications - Skin impedance - Body impedance - Continuous glucose monitoring - Battery impedance

Datasheet

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