ADR421
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ADR421

Ultraprecision, Low Noise, 2.500 V XFET® Voltage References

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Part Details
Part Models 6
1ku List Price Starting From $3.39
Features
  • Low noise (0.1 Hz to 10 Hz) 
    • ADR420: 1.75 μV p-p
    • ADR421: 1.75 μV p-p 
    • ADR423: 2.0 μV p-p 
    • ADR425: 3.4 μV p-p
  • Low temperature coefficient: 3 ppm/°C
  • Long-term stability: 50 ppm/1000 hours
  • Load regulation: 70 ppm/mA
  • Line regulation: 35 ppm/V
  • Low hysteresis: 40 ppm typical
  • Wide operating range 
    • ADR420: 4 V to 18 V 
    • ADR421: 4.5 V to 18 V 
    • ADR423: 5 V to 18 V 
    • ADR425: 7 V to 18 V
  • Quiescent current: 0.5 mA maximum
  • High output current: 10 mA
  • Wide temperature range: −40°C to +125°C
Additional Details
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The ADR42x are a series of ultraprecision, second generation eXtra implanted junction FET (XFET) voltage references featuring low noise, high accuracy, and excellent long-term stability in SOIC and MSOP footprints.

Patented temperature drift curvature correction technique and XFET technology minimize nonlinearity of the voltage change with temperature. The XFET architecture offers superior accuracy and thermal hysteresis to the band gap references. It also operates at lower power and lower supply headroom than the buried Zener references.

The superb noise and the stable and accurate characteristics of the ADR42x make them ideal for precision conversion applications such as optical networks and medical equipment. The ADR42x trim terminal can also be used to adjust the out-put voltage over a ±0.5% range without compromising any other performance. The ADR42x series voltage references offer two electrical grades and are specified over the extended industrial temperature range of −40°C to +125°C. Devices have 8-lead SOIC or 30% smaller, 8-lead MSOP packages.

Applications

  • Precision data acquisition systems
  • High resolution converters
  • Battery-powered instrumentation
  • Portable medical instruments
  • Industrial process control systems
  • Precision instruments
  • Optical network control circuits
Part Models 6
1ku List Price Starting From $3.39

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADR421ARMZ
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ADR421ARMZ-REEL7
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ADR421ARZ
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ADR421ARZ-REEL7
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ADR421BRZ
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ADR421BRZ-REEL7
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Part Models

Product Lifecycle

PCN

Oct 26, 2015

- 15_0176

Assembly Transfer of Select 8/10L MSOP Products to Amkor Philippines

May 15, 2012

- 10_0006

Halogen Free Material Change for mini SOIC Products

Aug 5, 2010

- 10_0165

ADR42X Front End Manufacturing Change

ADR421ARMZ

PRODUCTION

ADR421ARMZ-REEL7

PRODUCTION

ADR421ARZ

PRODUCTION

ADR421ARZ-REEL7

PRODUCTION

ADR421BRZ

PRODUCTION

ADR421BRZ-REEL7

PRODUCTION

Nov 23, 2010

- 10_0004

Halogen Free Material Change for SOIC Narrow Body Products Assembled at Amkor

ADR421ARZ

PRODUCTION

ADR421ARZ-REEL7

PRODUCTION

ADR421BRZ

PRODUCTION

ADR421BRZ-REEL7

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 26, 2015

- 15_0176

arrow down

Assembly Transfer of Select 8/10L MSOP Products to Amkor Philippines

May 15, 2012

- 10_0006

arrow down

Halogen Free Material Change for mini SOIC Products

Aug 5, 2010

- 10_0165

arrow down

ADR42X Front End Manufacturing Change

ADR421ARMZ

PRODUCTION

ADR421ARMZ-REEL7

PRODUCTION

ADR421ARZ

PRODUCTION

ADR421ARZ-REEL7

PRODUCTION

ADR421BRZ

PRODUCTION

ADR421BRZ-REEL7

PRODUCTION

Nov 23, 2010

- 10_0004

arrow down

Halogen Free Material Change for SOIC Narrow Body Products Assembled at Amkor

ADR421ARZ

PRODUCTION

ADR421ARZ-REEL7

PRODUCTION

ADR421BRZ

PRODUCTION

ADR421BRZ-REEL7

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 5

EVAL-AD7606

AD7606 Evaluation Board

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EVAL-AD7606

AD7606 Evaluation Board

AD7606 Evaluation Board

Product Detail

The EVAL-AD7606SDZ is a fully featured evaluation kit for the AD7606. This board operates in standalone mode or in conjunction with the Evaluation Controller Board, EVAL-SDP-CB1Z. When operated with the Evaluation Controller Board, software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the Evaluation Controller Board.

EVAL-AD7607

AD7607 Evaluation Board

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EVAL-AD7607

AD7607 Evaluation Board

AD7607 Evaluation Board

Product Detail

The EVAL-AD7607SDZ is a fully featured evaluation Kit for the AD7607. This board operates in standalone mode or in conjunction with the Evaluation Controller Board, EVAL-SDP-CB1Z. When operated with the Evaluation Controller Board, software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the Evaluation Controller Board.

EVAL-AD7608

AD7608 Evaluation Board

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EVAL-AD7608

AD7608 Evaluation Board

AD7608 Evaluation Board

Product Detail

The EVAL-AD7608SDZ is a fully featured evaluation Kit for the AD7608. This board operates in standalone mode or in conjunction with the Evaluation Controller Board, EVAL-SDP-CB1Z. When operated with the Evaluation Controller Board, software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the Evaluation Controller Board.

EVAL-AD7606-4

AD7606-4 Evaluation Board

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EVAL-AD7606-4

AD7606-4 Evaluation Board

AD7606-4 Evaluation Board

Product Detail

The EVAL-AD7606-4SDZ is a fully featured evaluation Kit for the AD7606-4. This board operates in standalone mode or in conjunction with the Evaluation Controller Board, EVAL-SDP-CB1Z. When operated with the Evaluation Controller Board, software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the Evaluation Controller Board.

EVAL-AD7606-6

AD7606-6 Evaluation Board

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EVAL-AD7606-6

AD7606-6 Evaluation Board

AD7606-6 Evaluation Board

Product Detail

The EVAL-AD7606-6SDZ is a fully featured evaluation Kit for the AD7606-6. This board operates in standalone mode or in conjunction with the Evaluation Controller Board, EVAL-SDP-CB1Z. When operated with the Evaluation Controller Board, software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the Evaluation Controller Board.

Reference Designs

Reference Designs 6

Precision DAC Configuration

High Precision Digital-to-Analog Conversion Using the 16-Bit AD5542/AD5541 Voltage Output DAC, ADR421 Reference, and AD8628 Auto-Zero Op Amp

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CN0079

High Precision Digital-to-Analog Conversion Using the 16-Bit AD5542/AD5541 Voltage Output DAC, ADR421 Reference, and AD8628 Auto-Zero Op Amp

CN0079

Circuits from the lab

tooltip Info:Circuits from the lab
High Precision Digital-to-Analog Conversion Using the 16-Bit AD5542/AD5541 Voltage Output DAC, ADR421 Reference, and AD8628 Auto-Zero Op Amp

Features and Benefits

  • Precision Digital to Analog Conversion
  • Auto Zero Op-Amp Reduces Digital Switching Noise for 16-Bit DAC
View Detailed Reference Design external link
Figure 1. Low Cost, 8-Channel, Simultaneously Sampled, Data Acquisition System (Simplified Schematic: All Connections and Decoupling Not Shown)

A Low Cost, 8-Channel, Simultaneously Sampled, Data Acquisition System with 84 dB SNR and Excellent Channel-to-Channel Matching

zoomopens a dialog

CN0175

A Low Cost, 8-Channel, Simultaneously Sampled, Data Acquisition System with 84 dB SNR and Excellent Channel-to-Channel Matching

CN0175

Circuits from the lab

tooltip Info:Circuits from the lab
A Low Cost, 8-Channel, Simultaneously Sampled, Data Acquisition System with 84 dB SNR and Excellent Channel-to-Channel Matching

Features and Benefits

  • Multichannel simultaneous sampling data acquisition system
  • 14 bit SAR ADC with >80 dB dynamic range
  • Integrated protection, amplifiers, and filtering
View Detailed Reference Design external link

Part Used 2

Precision DAC Configuration

Precision, 16-Bit, Voltage Level Setting with Less than 5 mW Total Power Dissipation

Software Calibrated RF Measurement System

Software Calibrated, 1 MHz to 8 GHz, 60 dB RF Power Measurement System Using the AD8318 Logarithmic Detector

zoomopens a dialog

CN0150

Software Calibrated, 1 MHz to 8 GHz, 60 dB RF Power Measurement System Using the AD8318 Logarithmic Detector

CN0150

Circuits from the lab

tooltip Info:Circuits from the lab
Software Calibrated, 1 MHz to 8 GHz, 60 dB RF Power Measurement System Using the AD8318 Logarithmic Detector

Features and Benefits

  • Software calibrated RF power measurement system
  • RMS, peak, and crest factor outputs
  • Functions from 1 MHz to 8 GHz
View Detailed Reference Design external link
Precision DAC Configuration

How to Achieve High Precision Voltage Level Setting Using the AD5542A/AD5541A 16-Bit Voltage Output DAC

16-Channel, 16-Bit Data Acquisition System Using Two AD7606 8-Channel DAS

Layout Considerations for an Expandable Multichannel Simultaneous Sampling Data Acquisition System (DAS) Based on the AD7606 16-Bit, 8-Channel DAS

zoomopens a dialog

CN0148

Layout Considerations for an Expandable Multichannel Simultaneous Sampling Data Acquisition System (DAS) Based on the AD7606 16-Bit, 8-Channel DAS

CN0148

Circuits from the lab

tooltip Info:Circuits from the lab
Layout Considerations for an Expandable Multichannel Simultaneous Sampling Data Acquisition System (DAS) Based on the AD7606 16-Bit, 8-Channel DAS

Features and Benefits

  • Mutlichannel simultaneous sampling data acquisition system
  • Layout guidelines for 16 bit performance
View Detailed Reference Design external link

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