Low Noise XFET Voltage References with Current Sink and Source Capability Data Sheet ADR431-EP/ADR434-EP/ADR435-EP FEATURES PIN CONFIGURATION Low noise (0.1 Hz to 10.0 Hz): 3.5 V p-p at 2.5 V typical O 1 ADR431-EP/ 8 DNC DNC (ADR431-EP) ADR434-EP/ V 2 7 COMP IN ADR435-EP No external capacitor required NIC 3 6 V OUT TOP VIEW Low temperature coefficient 4 5 TRIM GND (Not to Scale) 5 ppm/C maximum (ADR431-EP) NOTES 3 ppm/C maximum (ADR434-EP/ADR435-EP) 1. NIC = NOT INTERNALLY CONNECTED. THIS PIN IS NOT CONNECTED INTERNALLY. Load regulation: 15 ppm/mA maximum 2. DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN. Line regulation: 20 ppm/V maximum Figure 1. 8-Lead SOIC N (R-8) Wide supply voltage operating range: 4.5 V to 18 V (ADR431-EP) High output source and sink current: +10 mA and 10 mA ENHANCED PRODUCT FEATURES Supports defense and aerospace applications, aerospace qualified electronic component (AQEC) standard Military temperature range: 55C to +125C Controlled manufacturing baseline One assembly and test site One fabrication site Enhanced product change notification Qualification data available on request APPLICATIONS Precision data acquisition systems High resolution data converters Optical control circuits Precision instruments GENERAL DESCRIPTION The ADR431-EP/ADR434-EP/ADR435-EP are XFET voltage The ADR431-EP/ADR434-EP/ADR435-EP have the capability to references featuring low noise, high accuracy, and low temperature source up to +10 mA of output current and sink up to 10 mA. drift performance. Using Analog Devices, Inc., patented temperature They also come with a trim terminal to adjust the output voltage drift curvature correction and eXtra implanted junction FET over a 0.5% range without compromising performance. (XFET) technology, voltage change vs. temperature nonlinearity The ADR431-EP/ADR434-EP/ADR435-EP are available in an in the ADR431-EP/ADR434-EP/ADR435-EP is minimized. 8-lead narrow SOIC package and are specified over the military The XFET references operate at lower current (800 A) and temperature range of 55C to +125C. lower supply voltage headroom (2 V) than buried Zener Additional application and technical information can be found in references. Buried Zener references require more than 5 V the ADR430/ADR431/ADR433/ADR434/ADR435 data sheet. headroom for operation. The ADR431-EP/ADR434-EP/ Table 1. Selection Guide ADR435-EP XFET references are optimal low noise solutions for 5 V systems. Output Accuracy Temperature Model Voltage (V) (mV) Coefficient (ppm/C) ADR431T-EP 2.500 1.0 5 ADR434T-EP 4.096 1.5 3 ADR435T-EP 5.000 2.0 3 Rev. B Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20102017 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 09218-001ADR431-EP/ADR434-EP/ADR435-EP Data Sheet TABLE OF CONTENTS ADR431-EP Electrical Characteristics ........................................5 Features .............................................................................................. 1 Absolute Maximum Ratings ............................................................6 Enhanced Product Features ............................................................ 1 Thermal Resistance .......................................................................6 Applications ....................................................................................... 1 ESD Caution...................................................................................6 Pin Configuration ............................................................................. 1 Pin Configuration and Function Descriptions ..............................7 General Description ......................................................................... 1 Typical Performance Characteristics ..............................................8 Revision History ............................................................................... 2 Outline Dimensions ..........................................................................9 Specifications ..................................................................................... 3 Ordering Guide .............................................................................9 ADR431-EP Electrical Characteristics ....................................... 3 ADR434-EP Electrical Characteristics ...................................... 4 REVISION HISTORY 5/2017Rev. A to Rev. B Deleted ADR439 ............................................................ Throughout Added Pin Configuration and Function Descriptions Section, Figure 2 Renumbered Sequentially, and Table 7 ......................... 7 Changes to Typical Performance Characteristics Section ........... 8 8/2010Rev. 0 to Rev. A Added ADR431-EP......................................................... Throughout Added ADR435-EP......................................................... Throughout Changes to Ordering Guide ............................................................ 8 7/2010Revision 0: Initial Version Rev. B Page 2 of 9