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
| Reference Designs |
Data Sheets
Application Notes
Product Highlight
Frequently Asked Questions
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| ADR421ARMZ Production | 8 ld MSOP | OTH 50 | -40 to 125C | 3.19 | 2.88 | Y |
| ADR421ARMZ-REEL7 Production | 8 ld MSOP | REEL 1000 | -40 to 125C | 0 | 2.88 | Y |
| ADR421ARZ Production | 8 ld SOIC | OTH 98 | -40 to 125C | 3.19 | 2.88 | Y |
| ADR421ARZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 125C | 0 | 2.88 | Y |
| ADR421BR Production | 8 ld SOIC | OTH 98 | -40 to 125C | 6 | 5.04 | N |
| ADR421BR-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 125C | 0 | 5.04 | N |
| ADR421BRZ Production | 8 ld SOIC | OTH 98 | -40 to 125C | 5.27 | 4.43 | Y |
| ADR421BRZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 125C | 0 | 4.43 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EVAL-AD7606-4SDZ | Evaluation Board | 65 | Y |
| EVAL-AD7606-6SDZ | Evaluation Board | -1 | Y |
| EVAL-AD7606SDZ | Evaluation Board | 65 | Y |
| EVAL-AD7607SDZ | Evaluation Board | 65 | Y |
| EVAL-AD7608SDZ | Evaluation Board | 65 | Y |
| EVAL-SDP-CB1Z | Evaluation Controller Board | 99 | Y |
Reference Materials
