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.
Data Sheet, Rev. H, 6/07
|Title||Content Type||File Type|
|ADR420/ADR421/ADR423/ADR425: Ultraprecision, Low Noise, 2.048 V/2.500 V/3.00 V/5.00 V XFET® Voltage References Data Sheet (Rev I, 05/2011) (pdf, 544 kB)||Data Sheets|
|AN-713: The Effect of Long-Term Drift on Voltage References (pdf, 237 kB)||Application Notes|
|CN-0181: Precision, 16-Bit, Voltage Level Setting with Less than 5 mW Total Power Dissipation (pdf, 175 kB)||Circuit Note|
|CN-0175: A Low Cost, 8-Channel, Simultaneously Sampled, Data Acquisition System with 84 dB SNR and Excellent Channel-to-Channel Matching (pdf, 347 kB)||Circuit Note|
|CN-0150: Software Calibrated, 1 MHz to 8 GHz, 70 dB RF Power Measurement System Using the AD8318 Logarithmic Detector (pdf, 250 kB)||Circuit Note|
|CN-0148: Layout Considerations for an Expandable Multichannel Simultaneous Sampling Data Acquisition System (DAS) Based on the AD7606 16-Bit, 8-Channel DAS (pdf, 502 kB)||Circuit Note|
|CN-0131: 16 Channels of Programmable Output Span Using the AD5360 16-Bit Voltage Output DAC (pdf, 85 kB)||Circuit Note|
|CN-0079: High Precision Digital-to-Analog Conversion Using the 16-Bit AD5542/AD5541 Voltage Output DAC, ADR421 Reference, and AD8628 Auto-Zero Op Amp (pdf)||Circuit Note|
|CN-0169: How to Achieve High Precision Voltage Level Setting Using the AD5542A/AD5541A 16-Bit Voltage Output DAC (pdf, 457 kB)||Circuit Note|
|CN-0029: 8 to 16 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using the AD5390/AD5391/AD5392 DACs (pdf, 89 kB)||Circuit Note|
Designing DACs into Precision Industrial 10-V Applications
by Brendan Cronin, Analog Devices, Inc. (PlanetAnalog, 3/23/2006)
High-Performance Multichannel Power-Line Monitoring with Simultaneous-Sampling ADCs
By Colm Slattery, Analog Devices, Inc. (Analog Dialogue, Vol. 41, January 2007)
High Speed Op Amp Drives a 16-Bit, 1-MSPS Differential-Input A/D Converter
(Analog Dialogue, Vol. 36, No. 6, November/December 2002)
Low-Power Data Conversion Technology Enhances Portability
ICs for Programmable Logic Control and Distributed Control Systems
(pdf, 976 kB)
Analog Devices leadership in industrial IC technology, with the development of the iCMOS™ and iPolar™ processes, has uniquely defined high voltage and low voltage integration to deliver smaller, higher performance, and more cost effective ICs for industrial systems.
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|What do I need to know about selecting and using Voltage References?||FAQs/RAQs||HTML|
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|Voltage Reference Selection & Evaluation Wizard||Design Calculators||HTML|
Voltage Reference Wizard (downloadable)
This Wizard helps you select the most suitable voltage for a use with a data converter. Supply the Wizard with a given data converter; it will provide you with a number of suitable references plus the maximum DC error contributed to your overall system. Or enter the amount of DC error your system can tolerate and find out which of ADI’s reference and data converter pairs will meet your requirement.
Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.
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