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ADR425

更新时间： 2024-11-11 22:39:03
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亚德诺 - ADI /
页数 文件大小 规格书
16页 220K
描述
Ultraprecision Low Noise, 2.048 V/2.500 V/ 3.00 V/5.00 V XFET Voltage References

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Ultraprecision Low Noise, 2.048 V/2.500 V/  
®
a
3.00 V/5.00 V XFET Voltage References  
ADR420/ADR421/ADR423/ADR425  
FEATURES  
PIN CONFIGURATION  
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  
Surface-Mount Packages  
8-Lead SOIC  
8-Lead Mini_SOIC  
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  
1
2
3
4
8
7
6
5
TP  
NIC  
V
TP  
ADR42x  
V
IN  
NIC  
OUT  
TOP VIEW  
(Not to Scale)  
TRIM  
GND  
NIC = NO INTERNAL CONNECTION  
TP = TEST PIN (DO NOT CONNECT)  
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: –40ꢁC to +125ꢁC  
APPLICATIONS  
Precision Data Acquisition Systems  
High-Resolution Converters  
Battery-Powered Instrumentation  
Portable Medical Instruments  
Industrial Process Control Systems  
Precision Instruments  
Optical Network Control Circuits  
Table I. ADR42x Products  
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.  
Output  
Voltage  
Products VO  
Initial  
Accuracy  
%
ADR420  
Tempco  
ppm/  
mV  
°C  
ADR420  
ADR421  
ADR423  
ADR425  
2.048  
1, 3  
1, 3  
1.5, 4  
2, 6  
0.05, 0.15 3, 10  
0.04, 0.12 3, 10  
0.04, 0.12 3, 10  
0.04, 0.12 3, 10  
2.50  
3.00  
5.00  
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.  
XFET is a registered trademark of Analog Devices, Inc.  
REV. B  
Information furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assumed by Analog Devices for its  
use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
may result from its use. No license is granted by implication or otherwise  
under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
www.analog.com  
© Analog Devices, Inc., 2002  
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