Single Supply, 24-Bit, Sigma-Delta ADC with ±10 V and 0 mA to 20 mA Inputs, Open Wire Detection

Show More showmore-icon

Part Details
Part Models 2
1ku List Price Starting From $8.54
  • Tested for robustness per: IEC6100-4-2, IEC6100-4-3, IEC6100-4-4, IEC6100-4-5, IEC6100-4-6, CISPR 11
  • 24-bit ADC with integrated analog front end
    • Fast and flexible output rate: 1.25 SPS to 31.25 kSPS
    • Channel scan data rate of 6.21 kSPS per channel (161 μs settling)
    • 16 noise free bits at 1 kSPS per channel
    • 85 dB rejection of 50 Hz and 60 Hz at 20 SPS per channel
  • ±10 V inputs, 4 differential or 8 single-ended
    • Pin absolute maximum rating ±50 V
    • Absolute input pin voltage up to ±20 V
    • ≥1 MΩ impedance
    • ±0.06% accuracy at 25°C
    • Open wire detection
  • 0 mA to 20 mA inputs, 4 single-ended
    • Pin absolute maximum rating ±50 mA
    • Input range from −0.5 mA to +24 mA
    • 60 Ω impedance
    • ±0.08% accuracy at 25°C
  • On-chip 2.5 V reference
    • ±0.12% accuracy at 25°C, ±5 ppm/°C (typical) drift
  • Internal or external clock
  • Power supplies
    • AVDD = 3.0 V to 5.5 V
    • IOVDD = 2 V to 5.5 V
    • Total IDD = 3.9 mA
  • Temperature range: −40°C to +105°C
  • 3-wire or 4-wire serial digital interface (Schmitt trigger on SCLK)
    • SPI, QSPI, MICROWIRE, and DSP compatible
Additional Details
show more Icon

The AD4111 is a low power, low noise, 24-bit, sigma-delta (Σ-Δ) analog-to-digital converter (ADC) that integrates an analog front end (AFE) for fully differential or single-ended, high impedance (≥1 MΩ) bipolar, ±10 V voltage inputs, and 0 mA to 20 mA current inputs.

The AD4111 also integrates key analog and digital signal conditioning blocks to configure eight individual setups for each analog input channel in use. The AD4111 features a maximum channel scan rate of 6.21 kSPS (161 µs) for fully settled data.

The embedded 2.5 V, low drift (5 ppm/°C), band gap internal reference (with output reference buffer) reduces the external component count.

The digital filter allows flexible settings, including simultaneous 50 Hz and 60 Hz rejection at a 27.27 SPS output data rate. The user can select between the different filter settings depending on the demands of each channel in the application. The automatic channel sequencer enables the ADC to switch through each enabled channel.

The precision performance of the AD4111 is achieved by integrating the proprietary iPassives technology from Analog Devices, Inc. The AD4111 is factory calibrated to achieve a high degree of specified accuracy.

The AD4111 also has the unique feature of open wire detection on the voltage inputs for system level diagnostics using a single 5 V or 3.3 V power supply.

The AD4111 operates with a single power supply, making it easy to use in galvanically isolated applications. The specified operating temperature range is −40°C to +105°C. The AD4111 is housed in a 40-lead, 6 mm × 6 mm LFCSP package.


  • Process control
    • PLC and DCS modules
    • Instrumentation and measuremen
Part Models 2
1ku List Price Starting From $8.54

close icon



Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
  • HTML
  • HTML
  • HTML
  • HTML
Software & Part Ecosystem

Software & Part Ecosystem

Can't find the software or driver you need?

Request a Driver/Software
Evaluation Kit

Evaluation Kits 1

reference details image


AD4111 Evaluation Board



AD4111 Evaluation Board

AD4111 Evaluation Board

Features and Benefits

  • Fully featured evaluation board for the AD4111
  • PC control in conjunction with Analog Devices, Inc., SDP-B system demonstration platform (EVAL-SDP-CB1Z)
  • PC software for control and data analysis (time domain)

Product Detail

The EVAL-AD4111SDZ evaluation kit features the AD4111 24-bit, 31.25 kSPS analog-to-digital converter (ADC) with a ±10 V input voltage range (4 single-ended or 8 differential channels) with open wire detection and 4 current channels operating from 0 mA to 20 mA. All channels have on-board overvoltage and overcurrent protection.

The EVAL-AD4111SDZ board includes voltage reference, power, and data insulation and can be connected to the Analog Devices, Inc., SDP-B system demonstration platform (EVAL-SDP-CB1Z). The SDP-B board provides connection to a PC via USB port and can provide power for the EVAL-AD4111SDZ board from the PC USB port.

The AD411X Eval+ evaluation software configures the AD4111 device functionality and provides open wire detection, dc time domain analysis in the form of waveform graphs, histograms, and associated noise analysis for ADC performance evaluation.

Full specifications for the AD4111 are available in the product data sheet, which must be consulted in conjunction with the user guide when working with this evaluation board.

Reference Designs

Reference Designs 1

PLC/DCS Quad-Channel Voltage and Current Input Front End

Quad Channel Analog Input with Open Wire Detection and HART Compatibility for PLC/DCS Applications

zoomopens a dialog


Quad Channel Analog Input with Open Wire Detection and HART Compatibility for PLC/DCS Applications


Circuits from the lab

tooltip Info:Circuits from the lab
Quad Channel Analog Input with Open Wire Detection and HART Compatibility for PLC/DCS Applications

Features and Benefits

  • 4-Channels
  • +/- 10V , 4-20mA inputs
  • HART Compatible
  • Integrated Open Wire Detection
View Detailed Reference Design external link

Design & Integration Tools

pdf icon



Recently Viewed