FEATURES

? Ultra-low current consumption (typical)

? 32 μA: continuous conversion mode (gain = 128)

? 5 μA: duty cycling mode (ratio = 1/16)

? 0.5 μA: standby mode

? 0.1 μA: power-down mode

? Built-in features for system level power savings

? Current saving duty cycle ratio: 1/4 or 1/16

? 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

? Single supply as low as 1.71 V increasing battery length

? RMS noise: 25 nV rms at 1.17 SPS (gain = 128) = 48 nV/√Hz

? Up to 16 noise free bits (gain = 1)

? Output data rate: 1.17 SPS to 2.4 kSPS

? Operates from 1.71 V to 3.6 V single supply or ±1.8 V split

supplies

? Band gap reference with 15 ppm/°C maximum drift

? PGA with rail-to-rail analog input

? Adaptable sensor interfacing functionality

? Matched programmable excitation currents for RTDs

? 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

? Flexible filter options

? Simultaneous 50 Hz/60 Hz rejection (on selected filter options)

? General-purpose outputs

? Diagnostic functionality

? Crosspoint multiplexed inputs

? 4 differential/8 pseudodifferential inputs

? 5 MHz SPI (3-wire or 4-wire)

? Available in 35-ball, 2.7 mm × 3.56 mm WLCSP and 32-lead, 5

mm × 5 mm LFCSP

? Temperature range: ?40°C to +105°C (WLCSP), ?40°C to

+125°C (LFCSP)

? AD4129-4 LFCSP pin compatible with AD7124-4 LFCSP

APPLICATIONS

? Smart transmitters

? Wireless battery and harvester powered sensor nodes

? Portable instrumentation

? Temperature measurement: thermocouple, RTD, thermistors

? Pressure measurement: bridge transducers

? Healthcare and wearables