Overview
Features and Benefits
- 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
Product Details
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
Product Categories
Markets and Technologies
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (5)
Documentation & Resources
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AN-1291: Digital Potentiometers: Frequently Asked Questions8/18/2020
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AN-1587: 16 Channels of Programmable Output Span Using the AD5360 16-Bit Voltage Output DAC (Rev. A)10/3/2018PDF79K
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AN-1579: High Voltage, High Precision Current Sensing with Output Level Shifting Using the AD8210 Current Sense Amplifier and the AD8274 Difference Amplifier (Rev. A)10/3/2018PDF211 K
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AN-1525: High Precision, Digital-to-Analog Conversion Using the 16-Bit AD5541/AD5542 Voltage Output DAC, ADR421 Reference, and the AD8628 Auto-Zero Op Amp (Rev. A)1/25/2018PDF241 K
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FAQs7/26/2017
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CN-0181: Precision, 16-Bit, Voltage Level Setting with Less than 5 mW Total Power Dissipation4/28/2011PDF175 kB
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CN-0175: A Low Cost, 8-Channel, Simultaneously Sampled, Data Acquisition System with 84 dB SNR and Excellent Channel-to-Channel Matching1/11/2011PDF347 kB
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CN-0150: Software Calibrated, 1 MHz to 8 GHz, 70 dB RF Power Measurement System Using the AD8318 Logarithmic Detector11/16/2010PDF250 kB
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CN-0148: Layout Considerations for an Expandable Multichannel Simultaneous Sampling Data Acquisition System (DAS) Based on the AD7606 16-Bit, 8-Channel DAS11/16/2010PDF502 kB
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CN-0169: How to Achieve High Precision Voltage Level Setting Using the AD5542A/AD5541A 16-Bit Voltage Output DAC9/27/2010PDF457 kB
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Designing DACS into Precision Industrial 10V Applications5/1/2015
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Difference Amplifier Forms Heart of Precision Current Source9/1/2009 Analog Dialogue
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High-Performance Multichannel Power-Line Monitoring with Simultaneous-Sampling ADCs1/1/2007 Analog Dialogue
Reference Designs (6)
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| ADR421ARMZ | Material Declaration | Reliability Data | 8-Lead MSOP | |
| ADR421ARMZ-REEL7 | Material Declaration | Reliability Data | 8-Lead MSOP | |
| ADR421ARZ | Material Declaration | Reliability Data | 8-Lead SOIC | |
| ADR421ARZ-REEL7 | Material Declaration | Reliability Data | 8-Lead SOIC | |
| ADR421BRZ | Material Declaration | Reliability Data | 8-Lead SOIC | |
| ADR421BRZ-REEL7 | Material Declaration | Reliability Data | 8-Lead SOIC | |
| Wafer Fabrication Data |
PCN-PDN Information
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Support & Discussions
ADR421 Discussions
Sample & Buy
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.