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ADR445ARMZ Datasheet(PDF) 1 Page - Analog Devices |
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ADR445ARMZ Datasheet(HTML) 1 Page - Analog Devices |
1 / 20 page Ultralow Noise, LDO XFET® Voltage References with Current Sink and Source ADR440/ADR441/ADR443/ADR444/ADR445 Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved. FEATURES Ultralow noise (0.1 Hz to 10 Hz) ADR440: 1 μV p-p ADR441: 1.2 μV p-p ADR443: 1.4 μV p-p ADR444: 1.8 μV p-p ADR445: 2.25 μV p-p Superb temperature coefficient A Grade: 10 ppm/°C B Grade: 3 ppm/°C Low dropout operation: 500 mV Input range: (VOUT + 500 mV) to 18 V High output source and sink current: +10 mA and −5 mA Wide temperature range: −40°C to +125°C APPLICATIONS Precision data acquisition systems High resolution data converters Battery-powered instrumentations Portable medical instruments Industrial process control systems Precision instruments Optical control circuits PIN CONFIGURATIONS NOTES 1. NC = NO CONNECT 2. TP = TEST PIN (DO NOT CONNECT) TP 1 VIN 2 NC 3 GND 4 TP 8 NC 7 VOUT 6 TRIM 5 ADR440/ ADR441/ ADR443/ ADR444/ ADR445 TOP VIEW (Not to Scale) Figure 1. 8-Lead SOIC_N (R-Suffix) TP 1 VIN 2 NC 3 GND 4 TP 8 NC 7 VOUT 6 TRIM 5 ADR440/ ADR441/ ADR443/ ADR444/ ADR445 TOP VIEW (Not to Scale) NOTES 1. NC = NO CONNECT 2. TP = TEST PIN (DO NOT CONNECT) Figure 2. 8-Lead MSOP (RM-Suffix) GENERAL DESCRIPTION The ADR44x series is a family of XFET voltage references featuring ultralow noise, high accuracy, and low temperature drift performance. Using Analog Devices, Inc., patented temperature drift curvature correction and XFET (eXtra implanted junction FET) technology, voltage change vs. temperature nonlinearity in the ADR44x is greatly minimized. The XFET references offer better noise performance than buried Zener references, and XFET references operate off low supply voltage headroom (0.5 V). This combination of features makes the ADR44x family ideally suited for precision signal conversion applications in high-end data acquisition systems, optical networks, and medical applications. The ADR44x family has the capability to source up to 10 mA of output current and sink up to 5 mA. It also comes with a trim terminal to adjust the output voltage over a 0.5% range without compromising performance. Offered in two electrical grades, the ADR44x family is avail- able in 8-lead MSOP and narrow SOIC packages. All versions are specified over the extended industrial temperature range of −40°C to +125°C. Table 1. Selection Guide Model Output Voltage (V) Initial Accuracy, ± (mV) Temperature Coefficient (ppm/°C) ADR440A 2.048 3 10 ADR440B 2.048 1 3 ADR441A 2.500 3 10 ADR441B 2.500 1 3 ADR443A 3.000 4 10 ADR443B 3.000 1.2 3 ADR444A 4.096 5 10 ADR444B 4.096 1.6 3 ADR445A 5.000 6 10 ADR445B 5.000 2 3 |
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