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ADR421
PRODUCTIONUltraprecision, Low Noise, 2.500 V XFET® Voltage References
- Part Models
- 6
- 1ku List Price
- Starting From $3.39
Part Details
- 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
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
Documentation
Data Sheet 1
Application Note 11
Technical Articles 1
Frequently Asked Question 1
Circuit Note 5
Analog Dialogue 2
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 |
|---|---|---|---|
| ADR421ARMZ | 8-Lead MSOP | ||
| ADR421ARMZ-REEL7 | 8-Lead MSOP | ||
| ADR421ARZ | 8-Lead SOIC | ||
| ADR421ARZ-REEL7 | 8-Lead SOIC | ||
| ADR421BRZ | 8-Lead SOIC | ||
| ADR421BRZ-REEL7 | 8-Lead SOIC |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 26, 2015 - 15_0176 Assembly Transfer of Select 8/10L MSOP Products to Amkor Philippines |
||
| ADR421ARMZ | PRODUCTION | |
| ADR421ARMZ-REEL7 | PRODUCTION | |
|
May 15, 2012 - 10_0006 Halogen Free Material Change for mini SOIC Products |
||
| ADR421ARMZ | PRODUCTION | |
| ADR421ARMZ-REEL7 | PRODUCTION | |
|
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 | |
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 |
Reference Designs
Software Calibrated, 1 MHz to 8 GHz, 60 dB RF Power Measurement System Using the AD8318 Logarithmic Detector
Part Used
Resources
Design & Integration Tools
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