Analog Devices Inc. AD4130-8 Ultra Low Power 24-Bit Sigma-Delta ADC

Analog Devices Inc. AD4130-8 Ultra Low Power 24-Bit Sigma-Delta ADC

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Analog Devices Inc. AD4130-8 Ultra Low Power 24-Bit Sigma-Delta ADC is a high precision measurement solution for low bandwidth battery-operated applications. The AD4130-8 features a fully integrated analog front end (AFE). It includes a multiplexer for up to 16 single-ended or eight differential inputs. The device also has a programmable gain amplifier (PGA), 24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC), on-chip reference, and oscillator. These features improve the battery-operated lifetime, first in, first out (FIFO) buffer, and duty cycling.

Features

  • Ultralow current consumption (typical):
    • 32µA continuous conversion mode (gain = 128)
    • 5µA duty cycling mode (ratio = 1/16)
    • 0.5µA standby mode
    • 0.1µA power-down mode
  • Built-in features for system-level power savings
    • Current saving duty cycle ratio is 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 1.71V increasing battery length
  • RMS noise 25nV rms at 1.17 SPS (gain = 128) – 48nV/√Hz
  • Up to 22 noise-free bits (gain = 1)
  • Output data rate 1.17 SPS to 2.4 kSPS
  • Operates from 1.71V to 3.6V single supply or ±1.8V split supplies
  • Band gap reference with 15ppm/°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 50Hz/60Hz rejection (on selected filter options)
  • General-purpose outputs
  • Diagnostic functionality
  • Crosspoint multiplexed inputs
    • Eight differential/16 pseudo differential inputs
  • 5MHz SPI (3-wire or 4-wire)
  • Available in 35-ball, 2.74mm × 3.6mm WLCSP
  • Temperature range −40°C to +105°C

Block Diagram

more information: https://www.analog.com/en/products/ad4130-8.html

About mixos

Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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