Two engineers working in the lab

Save time and deliver your solutions faster with ADI’s new suite of precision technology signal chains. Align your applications ranging from Smart Industry to Instrumentation, Electrification to Digital Health, to exactly the right precision technology combinations.

Tailor your signal chain with confidence

ADR444

PRODUCTION

Ultralow Noise, LDO XFET® 4.096V Voltage Reference w/Current Sink and Source

Data Sheet (Rev. G) Product Selection Table
Viewing:

Overview

  • Ultralow noise (0.1 Hz to 10 Hz)
    • ADR440: 1 μV p-p
    • ADR441: 1.2 μV p-p
    • ADR443: 1.4 μV p-p
    • ADR444: 1.8 μV p-p
    • ADR445: 2.25 μV p-p
  • Superb temperature coefficient
    • A Grade: 10 ppm/°C
    • B Grade: 3 ppm/°C
  • Low dropout operation (supply voltage headroom): 500 mV
  • Input range: (VOUT + 500 mV) to 18 V
  • High output source and sink current
    • +10 mA and −5 mA, respectively
  • Wide temperature range: −40°C to +125°C

The ADR440/ADR441/ADR443/ADR444/ADR445 series is a family of XFET® voltage references featuring ultralow noise, high accuracy, and low temperature drift performance. Using Analog Devices, Inc., patented temperature drift curvature correction and XFET (eXtra implanted junction FET) technology, voltage change vs. temperature nonlinearity in the ADR440/ADR441/ADR443/ADR444/ADR445 is greatly minimized.

The XFET references offer better noise performance than buried Zener references, and XFET references operate off low supply voltage headroom (500 mV). This combination of features makes the ADR440/ADR441/ADR443/ADR444/ADR445 family ideally suited for precision signal conversion applications in high-end data acquisition systems, optical networks, and medical applications.

The ADR440/ADR441/ADR443/ADR444/ADR445 family has the capability to source up to 10 mA of output current and sink up to −5 mA. It also comes with a trim terminal to adjust the output voltage over a 0.5% range without compromising performance.

The ADR440/ADR441/ADR443/ADR444/ADR445 family is available in 8-lead MSOP and narrow SOIC packages and offered in two electrical grades. All versions are specified over the extended industrial temperature range of −40°C to +125°C.

Applications

  • Precision data acquisition systems
  • High resolution data converters
  • Battery-powered instrumentation
  • Portable medical instruments
  • Industrial process control systems
  • Precision instruments
  • Optical control circuits

ADR444
Ultralow Noise, LDO XFET® 4.096V Voltage Reference w/Current Sink and Source
ADR440-441-443-444-445 Functional Block Diagram ADR440-441-443-444-445 Functional Block Diagram ADR440-441-443-444-445-pc ADR440-441-443-444-445 Pin Configuration
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 1

Technical Articles 1

Frequently Asked Question 1

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Hardware Ecosystem

Parts Product Life Cycle Description
LDO Linear Regulators 1
LT3040
RECOMMENDED FOR NEW DESIGNS 20V, 200mA, Ultralow Noise, Ultrahigh PSRR Precision DAC/Reference Buffer
Modal heading
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
EVAL-AD7768-4

AD7768-4 Evaluation Board

Buy Now View Details

Features and Benefits

  • Full featured evaluation board for the AD7768-4
  • PC control in conjunction with the SDP-H1 system demonstration platform (EVAL-SDP-CH1Z)
  • PC software control and data analysis
  • Time and frequency domain
  • Standalone hardware capability

Product Details

The EVAL-AD7768-4FMCZ evaluation kit features the AD7768-4 24-bit, 256 kSPS, analog-to-digital converter (ADC). A 7 V to 9 V external bench top supply is regulated to 5 V and 3.3 V to supply the AD7768-4 and support components. The EVAL-AD7768-4FMCZ board connects to the USB port of the PC via a connection to the EVAL-SDP-CH1Z motherboard.

The AD7768-4 evaluation software fully configures the AD7768-4 device register functionality and provides dc and ac time domain analysis in the form of waveform graphs, histograms, and associated noise analysis for ADC performance evaluation.

The EVAL-AD7768-4FMCZ is an evaluation board that allows the user to evaluate the features of the ADC. The user PC software executable controls the AD7768-4 over a USB cable through the EVAL-SDP-CH1Z system demonstration platform (SDP).

Full specifications on the AD7768-4 are available in the product data sheet, which should be consulted in conjunction with this user guide when working with the evaluation board.

eval board
schematic 5
schematic 6
schematic 7
EVAL-AD7761

AD7761 Evaluation Board

Buy Now View Details

Features and Benefits

  • Full featured evaluation board for the AD7761
  • PC control in conjunction with the SDP-H1 system demonstration platform (EVAL-SDP-CH1Z)
  • PC software control and data analysis
  • Time and frequency domain
  • Standalone hardware capability

Product Details

The EVAL-AD7761FMCZ evaluation kit features the AD7761 16-bit, 256 kSPS, analog-to-digital converter (ADC). A 7 V to 9 V external bench top supply is regulated to 5 V and 3.3 V to supply the AD7761 and support components. The EVAL-AD7761FMCZ board connects to the USB port of the PC via a connection to the EVAL-SDP-CH1Z motherboard.

The AD7761 evaluation software fully configures the AD7761 device register functionality and provides dc and ac time domain analysis in the form of waveform graphs, histograms, and associated noise analysis for ADC performance evaluation.

The EVAL-AD7761FMCZ is an evaluation board that allows the user to evaluate the features of the ADC. The user PC software executable controls the AD7761 over a USB cable through the EVAL-SDP-CH1Z system demonstration platform (SDP).

Full specifications for the AD7761 are available in the product data sheet, which should be consulted in conjunction with this user guide when working with the evaluation board.

eval board
schematic 8
schematic 9
schematic 10
schematic 11
schematic 12
EVAL-AD7768

AD7768 Evaluation Board

Buy Now View Details

Features and Benefits

  • Full featured evaluation board for the AD7768
  • PC control in conjunction with the SDP-H1 System Demonstration Platform (EVAL-SDP-CH1Z)
  • PC software control and data analysis 
  • Time and frequency domain
  • Standalone hardware capability

Product Details

The EVAL-AD7768FMCZ evaluation kit features the AD7768 24-bit, 256 kSPS, analog-to-digital converter (ADC). A 7 V to 9 V external bench top supply is regulated to 5 V and 3.3 V to supply the AD7768 and support components. The EVAL-AD7768FMCZ board connects to the USB port of the PC via a connection to the EVAL-SDP-CH1Z motherboard.

The AD7768 evaluation software fully configures the AD7768 device register functionality and provides dc and ac time domain analysis in the form of waveform graphs, histograms, and associated noise analysis for ADC performance evaluation.

The EVAL-AD7768FMCZ is an evaluation board that allows the user to evaluate the features of the ADC. The user PC software executable controls the AD7768 over a USB cable through the EVAL-SDP-CH1Z System Demonstration Platform (SDP). The AD7768 evaluation software requires PC running Windows® 7 to Windows 10 with a USB 2.0 port.

Full specifications on the AD7768 are available in the product data sheet, which should be consulted in conjunction with this user guide when working with the evaluation board.

EVAL-AD7768-4
AD7768-4 Evaluation Board
EVAL-AD7768-4FMCZ SDP-H1 evaluation board layout EVAL-AD77648-4 Evaluation software main window AD7768 Power THD Combinations
EVAL-AD7761
AD7761 Evaluation Board
EVAL-AD7761FMCZ - Angle View EVAL-AD7761FMCZ - Bottom View EVAL-AD7761FMCZ - Top View
EVAL-AD7768
AD7768 Evaluation Board
EVAL-AD7768FMCZ SDP-H1 evaluation board layout EVAL-AD7768FMCZ Sample Board Configuration EVAL-AD7768FMCZ Sample FFT AD7768 Power THD Combinations

Reference Designs

Multichannel Data Acquisition Circuit
Multichannel Data Acquisition Circuit
CN0269 Circuits from the lab

18-Bit, 1.33 MSPS, 16-Channel Data Acquisition System

View Detailed Reference Design

Features and Benefits

  • 18-Bit, 16-Channel Data Acquisition
  • 16 single-ended, 8 differential inputs
  • 1.33MSPS sampling rate
  • 250kHz channel switching rate
Four AD7765 ADCs in a Daisy-Chained Connection
Four AD7765 ADCs in a Daisy-Chained Connection
CN0157 Circuits from the lab

24-Bit, 4-Channel, High Dynamic Range, 156 kSPS per Channel Simultaneous Sampling Data Acquisition System

View Detailed Reference Design

Features and Benefits

  • 24 bit, 4 channel simultaneous sampling system
  • High dynamic range with high crosstalk isolation
  • Daisy chain configuration minimizes digital lines to host
Simplified Circuit Diagram
Simplified Circuit Diagram
CN0535 Circuits from the lab

High Performance, Alias Free Measurement Platform for Flexible Data Acquisition System

View Detailed Reference Design

Features and Benefits

  • Alias free Measurement System
  • Optimized for AC & DC Performance
  • Wide Analog Input (+/-12V)
  • FMC Compatible Form Factor

Part Used

Resources

Design & Integration Tools

Videos

  • lazy blur
    VIDEO · 2021-11-16 06:43
    CN0535 Unboxing and Getting Started Video
  • lazy blur
    VIDEO · 2021-11-04 04:42
    CN0535 Mbed Example Program Setup
Basic Analog Output Circuit for Single Channel
Basic Analog Output Circuit for Single Channel
CN0202 Circuits from the lab

Flexible, High Accuracy, Low Drift, PLC/DCS Analog Output Module

View Detailed Reference Design

Features and Benefits

  • Programmable analog output
  • Industrial current and voltage output driver
  • Ultralow noise and low temperature drift
Figure 1. Condition-Based Monitoring Signal Chain for an IEPE Piezoelectric Vibration Sensor
Figure 1. Condition-Based Monitoring Signal Chain for an IEPE Piezoelectric Vibration Sensor
CN0561 Eval Board Photo Angle View
CN0561 Eval Board Photo Top View
CN0561 Eval Board Photo Bottom View
CN0561 Circuits from the lab

Alias Free 24-bit, Quad Channel Wide Bandwidth Data Acquisition System for IEPE Sensor with Fault and Sensor protection

View Detailed Reference Design

Features and Benefits

  • Alias Free Quad Channel data acquisition
  • Alias free dual IEPE-Compatible Vibration Sensor Interface
  • Channel Independent Excitation Source and Sensor Bias
  • Analog Overvoltage and Undervoltage Protection
  • Sensor Frequency Response from DC up to 54 kHz
  • Synchronized, Full Bandwidth Data Measurement and Capture
Basic Analog Output Circuit for Single Channel
Basic Analog Output Circuit for Single Channel
CN0204 Circuits from the lab

Flexible, High Voltage, High Accuracy, Low Drift PLC/DCS Analog Output Module

View Detailed Reference Design

Features and Benefits

  • High voltage, up to 44V
  • Programmable analog output
  • Galvanic isolation from rest of system
  • Ideal for PLC and DCS modules
Flexible Analog Front-End Circuit for Wide Industrial Range Signal Conditioning
Flexible Analog Front-End Circuit for Wide Industrial Range Signal Conditioning
CN0251 Circuits from the lab

24-Bit, 4.7 Hz, 4-Channel Analog Data Acquisiton System

View Detailed Reference Design

Features and Benefits

  • 4-channel wide dynamic range
  • Industrial signal levels
  • In-amp input stage for high CMR
CN0269
18-Bit, 1.33 MSPS, 16-Channel Data Acquisition System
Multichannel Data Acquisition Circuit
CN0157
24-Bit, 4-Channel, High Dynamic Range, 156 kSPS per Channel Simultaneous Sampling Data Acquisition System
Four AD7765 ADCs in a Daisy-Chained Connection
CN0535
High Performance, Alias Free Measurement Platform for Flexible Data Acquisition System
Simplified Circuit Diagram
CN0202
Flexible, High Accuracy, Low Drift, PLC/DCS Analog Output Module
Basic Analog Output Circuit for Single Channel
CN0561
Alias Free 24-bit, Quad Channel Wide Bandwidth Data Acquisition System for IEPE Sensor with Fault and Sensor protection
Figure 1. Condition-Based Monitoring Signal Chain for an IEPE Piezoelectric Vibration Sensor
CN0561 Eval Board Photo Angle View
CN0561 Eval Board Photo Top View
CN0561 Eval Board Photo Bottom View
CN0204
Flexible, High Voltage, High Accuracy, Low Drift PLC/DCS Analog Output Module
Basic Analog Output Circuit for Single Channel
CN0251
24-Bit, 4.7 Hz, 4-Channel Analog Data Acquisiton System
Flexible Analog Front-End Circuit for Wide Industrial Range Signal Conditioning

Latest Discussions

16 Weeks Ago
Design Inquiry
19 Weeks Ago
Request for LTspice Simulation Model – ADR444BRZ
21 Weeks Ago
Request for LTSpice Models
View related discussion on EngineerZone®

Recently Viewed