ADR421 Ultraprecision, Low Noise, 2.500 V XFET® Voltage References

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
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
Linear Products
Reference Designs
Data Sheets
Documentnote
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)PDF 544 kB
Application Notes
Documentnote
AN-713: The Effect of Long-Term Drift on Voltage References (Rev. 0)PDF 237 kB
Product Highlight
Documentnote
Frequently Asked Questions
Documentnote
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADR421ARMZ Production8 ld MSOPOTH 50-40 to 125C3.192.88Y
ADR421ARMZ-REEL7 Production8 ld MSOPREEL 1000-40 to 125C02.88Y
ADR421ARZ Production8 ld SOICOTH 98-40 to 125C3.192.88Y
ADR421ARZ-REEL7 Production8 ld SOICREEL 1000-40 to 125C02.88Y
ADR421BR Production8 ld SOICOTH 98-40 to 125C65.04N
ADR421BR-REEL7 Production8 ld SOICREEL 1000-40 to 125C05.04N
ADR421BRZ Production8 ld SOICOTH 98-40 to 125C5.274.43Y
ADR421BRZ-REEL7 Production8 ld SOICREEL 1000-40 to 125C04.43Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
EVAL-AD7606-4SDZEvaluation Board65Y
EVAL-AD7606-6SDZEvaluation Board-1Y
EVAL-AD7606SDZEvaluation Board65Y
EVAL-AD7607SDZEvaluation Board65Y
EVAL-AD7608SDZEvaluation Board65Y
EVAL-SDP-CB1ZEvaluation Controller Board99Y
Reference Materials
ADR420/ADR421/ADR423/ADR425:高精度、低噪声、2.048 V/2.500 V/3.00 V/5.00 V XFET®基准电压源 数据手册 (Rev. H) adr420
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) adr420
CN0150 Design & Integration Files adr421
AN-713: The Effect of Long-Term Drift on Voltage References (Rev. 0) ad580
CN-0181: Precision, 16-Bit, Voltage Level Setting with Less than 5 mW Total... adr421
CN-0175: A Low Cost, 8-Channel, Simultaneously Sampled, Data Acquisition System ad7607
CN-0131: 16 Channels of Programmable Output Span Using the AD5360 16-Bit... adr421
CN-0148: Layout Considerations for an Expandable Multichannel Simultaneous... ad7606
CN-0149 adr421
CN-0150: Software Calibrated, 1 MHz to 8 GHz, 70 dB RF Power Measurement System ad7887
CN-0079: High Precision Digital-to-Analog Conversion Using the 16-Bit... adr421
CN-0169: How to Achieve High Precision Voltage Level Setting Using the... adr421
CN-0029 adr421
CN-0014 adr421
CN-0011 adr421
CN-0010 adr421
CN-0007 adr421
DAC 设计导入精密 10 V 工业应用 adr421