ADR421 Large Scale Integrated Circuit Chip Electroics IC
Ultraprecision
ADR421A Ultraprecision Low Noise, 2.048 V/2.500 V/ 3.00 V/5.00 V XFET
Voltage References
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 +125C
APPLICATIONS
Precision Data Acquisition Systems High-Resolution Converters
Battery-Powered Instrumentation Portable Medical Instruments
Industrial Process Control Systems Precision Instruments Optical
Network Control Circuits G
ADR420 Products | Output Voltage | Initial Accuracy mV % | Tempco ppm/°C |
ADR420 ADR421 2.50 1, 3 0.04, 0.12 3, 10 ADR423 3.00 1.5, 4 0.04, 0.12 3,
10 ADR425 5.00 2, 6 0.04, 0.12 3, 10 | 2.048 2.50 3.00 5.00 | 1,3 0.05, 0.15 1.3 0.04, 0.12 1.5 0.04, 0.12 2.6 0.04, 0.12 |
3, 10 3, 10 3, 10 3, 10 |
GENERAL DESCRIPTION
The 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 the
voltage change with temperature. The XFET architecture offers
superior accuracy and thermal hysteresis to the bandgap references.
It 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.
ABSOLUTE MAXIMUM RATINGS*
Supply 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.
| Package Type | θJA* | Unit |
8-Lead Mini_SOIC (RM) 8-Lead SOIC (R) | 190 130 | °C/W °C/W |
