Features: Low Noise (0.1 Hz to 10 Hz)
ADR420: 1.75 V p-p
ADR421: 1.75 V p-p
ADR423: 2.0 V p-p
ADR425: 3.4 V 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: 40C to +125CApplicationPrecision Data Acquisition Systems
High-Resolution Converters
Battery-Powered Instrumentation
Portable Medical Instruments
Industrial Process Control Systems
Precision Instruments
Optical Network Control CircuitsPinout
SpecificationsSupply Voltage........................................................................................................... 18 V
Output Short-Circuit Duration to GND................................................................ Indefinite
Storage Temperature Range
R, RM Packages . . . . . . . . . . . . . . . . . . . ...............................................65°C to +150°C
Operating Temperature Range
ADR42x.................................................. .............................................. 40°C to +125°C
Junction Temperature Range
R, RM Packages......................................................................................65°C to +150°C
Lead Temperature Range (Soldering, 60 sec) ........................................................300°C
*Absolute maximum ratings apply at 25°C, unless otherwise noted.
| Vout |
5 |
| Initial Accuracy (%) |
0.04 |
| Ref Out TC (ppm/C) |
1ppm/C |
| Supply Voltage Range (V) |
+7.0 to +18 |
| Supply Current |
500A |
| Ref Output Current (mA) |
10mA |
| 0.1-10 Hz Noise (V p-p) |
3.4V p-p |
| Temp Range(s) |
-40 to +125 |
| Package |
MSOP,SOIC |
| Reference Type |
Series |
DescriptionThe ADR42x series are ultraprecision second-generation XFET voltage references featuring low noise, high accuracy, and excellent long-term stability in a SOIC and Mini_SOIC footprints. Patented temperature drift curvature correction technique and XFET (eXtra implanted junction FET) technology minimize nonlinearity of thevoltage change with temperature. The XFET architecture offers superior accuracy and thermal hysteresis to the bandgap references. ADR42x also operates at lower power and lower supply headroom than the Buried Zener references.
The superb noise, stable, and accurate characteristics of ADR42x make them ideal for precision conversion applications such as optical network and medical equipment. The ADR42x trim terminal can also be used to adjust the output 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 are available in 8-lead SOIC-8 or 30% smaller 8-lead Mini_SOIC-8 packages.
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
ADR425 Data Sheet
