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

ADR420

PRODUCTION

Ultraprecision, Low Noise, 2.048 V XFET^® Voltage Reference

Data Sheet (Rev. J) Product Selection Table

Part Models: 6
1ku List Price: Starting From $3.39

Viewing:

Overview

Chinese data sheet available
Low noise (0.1 Hz to 10 Hz)
ADR420: 1.75 μVp-p
ADR421: 1.75 μVp-p
ADR423: 2.0 μVp-p
ADR425: 3.4 μVp-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

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

Documentation

Data Sheet 1

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.J) 10/04/2002

Application Note 3

AN-2556: IEC 61000-4-x and CISPR 11 Tested Analog Input Design with AD4116 for Industrial Automation 10/07/2024

AN-1239: High Accuracy, Bipolar Voltage Output Digital-to-Analog Conversion Using the AD5763 DAC 04/01/2013

AN-1573: High Accuracy, Bipolar Voltage Output Digital-to-Analog Conversion Using the AD5765 DAC 05/14/2025

Frequently Asked Question 1

FAQ 03/14/2015

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADR420ARMZ	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADR420ARMZ-REEL7	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADR420ARZ	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADR420ARZ-REEL7	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADR420BRZ	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADR420BRZ-REEL7	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 26, 2015 - 15_0176 Assembly Transfer of Select 8/10L MSOP Products to Amkor Philippines
		PCN15_0176_Form Material_Report Detailed Change Description Qualification Results Summary Qualification Results Summary
ADR420ARMZ	PRODUCTION
ADR420ARMZ-REEL7	PRODUCTION
May 15, 2012 - 10_0006 Halogen Free Material Change for mini SOIC Products
		PCN10_0006_Form Material_Report Qualification Report Summary Qualification Report Summary
ADR420ARMZ	PRODUCTION
ADR420ARMZ-REEL7	PRODUCTION
Aug 5, 2010 - 10_0165 ADR42X Front End Manufacturing Change
		PCN10_0165_Form Material_Report Qualification Plan Summary
ADR420ARMZ	PRODUCTION
ADR420ARMZ-REEL7	PRODUCTION
ADR420ARZ	PRODUCTION
ADR420ARZ-REEL7	PRODUCTION
ADR420BRZ	PRODUCTION
ADR420BRZ-REEL7	PRODUCTION
Nov 23, 2010 - 10_0004 Halogen Free Material Change for SOIC Narrow Body Products Assembled at Amkor
		PCN10_0004_Form Material_Report ADI0012 Reliability Report
ADR420ARZ	PRODUCTION
ADR420ARZ-REEL7	PRODUCTION
ADR420BRZ	PRODUCTION
ADR420BRZ-REEL7	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

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

Latest Discussions

2 Years Ago

7 Years Ago