AD4129-8BCBZ-RL7

AD4129-8 is a 32μA, ultra low power, 16bit sigma-delta ADC with integrated PGA and FIFO. The fully integrated analogue front end (AFE) includes a multiplexer for up to 16 single-ended or eight differential inputs, programmable gain amplifier (PGA), 16bit sigma-delta (Σ-Δ) analogue-to-digital converter (ADC), on-chip reference and oscillator, selectable filter options, smart sequencer, sensor biasing and excitation options, diagnostics, and newly added features to improve the battery-operated lifetime (more than five years on a coin cell), i.e., a first in, first out (FIFO) buffer and duty cycling. It is designed to operate from a single analogue supply voltage from 1.71V to 3.6V. Typical applications are smart transmitters, wireless battery and harvester powered sensor nodes, portable instrumentation, temperature measurement: thermocouple, RTD, thermistors, pressure measurement: bridge transducers, healthcare and wearables.

• Ultra-low power, high precision, measurement solution for low bandwidth battery operated application
• Smart sequencer and per channel configuration minimizes host processor load
• Deep embedded FIFO minimizes host processor load (depth of 256 samples)
• Autonomous FIFO interrupt functionality, threshold detection, general-purpose outputs
• Band gap reference with 15ppm/°C maximum drift, up to 22 noise free bits (gain = 1)
• PGA with rail-to-rail analogue input, adaptable sensor interfacing functionality
• Matched programmable excitation currents for (RTD), on-chip bias voltage generator for thermocouples
• Low-side power switch for bridge transducers, sensor open wire detection
• Internal temperature sensor and oscillator, self and system calibration
• CHIPS W/SOLDER BUMPS/WLCSP package, -40°C to +105°C temperature rating

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