Ultralow Noise XFET Voltage References with Current Sink and Source Capability Data Sheet ADR430/ADR431/ADR433/ADR434/ADR435 FEATURES PIN CONFIGURATIONS ADR430/ADR431 Low noise (0.1 Hz to 10.0 Hz): 3.5 V p-p at 2.500 V output ADR433/ADR434 No external capacitor required ADR435 Low temperature coefficient DNC 1 8 DNC A grade: 10 ppm/C maximum V 2 7 COMP IN B grade: 3 ppm/C maximum TOP VIEW 3 NIC 6 V (Not to Scale) OUT Load regulation: 15 ppm/mA 4 GND 5 TRIM Line regulation: 20 ppm/V Wide operating range NOTES 1. NIC = NOT INTERNALLY CONNECTED. ADR430: 4.1 V to 18 V THIS PIN IS NOT CONNECTED INTERNALLY. ADR431: 4.5 V to 18 V 2. DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN. ADR433: 5.0 V to 18 V Figure 1. 8-Lead MSOP (RM-8) ADR434: 6.1 V to 18 V ADR430/ADR431 ADR435: 7.0 V to 18 V ADR433/ADR434 ADR435 High output source and sink current: 30 mA and 20 mA Wide temperature range: 40C to +125C DNC 1 8 DNC V 2 7 COMP IN TOP VIEW APPLICATIONS NIC 3 6 V OUT (Not to Scale) GND 4 5 TRIM Precision data acquisition systems High resolution data converters NOTES Medical instruments 1. NIC = NOT INTERNALLY CONNECTED. THIS PIN IS NOT CONNECTED INTERNALLY. Industrial process control systems 2. DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN. Optical control circuits Figure 2. 8-Lead SOIC N (R-8) Precision instruments GENERAL DESCRIPTION 1 The ADR430/ADR431/ADR433/ADR434/ADR435 series is a The ADR430/ADR431/ADR433/ADR434/ADR435 are family of XFET voltage references featuring low noise, high available in 8-lead MSOP and 8-lead narrow SOIC packages. All accuracy, and low temperature drift performance. Using Analog versions are specified over the extended industrial temperature Devices, Inc., temperature drift curvature correction and extra range of 40C to +125C. implanted junction FET (XFET) technology, voltage change vs. Table 1. Selection Guide temperature nonlinearity in the ADR430/ADR431/ADR433/ ADR434/ADR435 is minimized. Temperature Output Initial Accuracy Coefficient The XFET references operate at lower current (800 A) and Model Voltage (V) (mV) (ppm/C) lower supply voltage headroom (2 V) than buried Zener ADR430A 2.048 3 10 references. Buried Zener references require more than 5 V of ADR430B 2.048 1 3 headroom for operation. The ADR430/ADR431/ADR433/ ADR431A 2.500 3 10 ADR434/ADR435 XFET references are low noise solutions for ADR431B 2.500 1 3 5 V systems. ADR433A 3.000 4 10 The ADR430/ADR431/ADR433/ADR434/ADR435 family has ADR433B 3.000 1.5 3 the capability to source up to 30 mA of output current and sink ADR434A 4.096 5 10 up to 20 mA. It also comes with a trim terminal to adjust the ADR434B 4.096 1.5 3 output voltage over a 0.5% range without compromising ADR435A 5.000 6 10 performance. ADR435B 5.000 2 3 1 Protected by U.S. Patent Number 5,838,192. Rev. N 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 20032018 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. 04500-041 04500-001ADR430/ADR431/ADR433/ADR434/ADR435 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Noise Performance ..................................................................... 16 Applications ....................................................................................... 1 High Frequency Noise ............................................................... 16 Pin Configurations ........................................................................... 1 Turn-On Settling Time .............................................................. 17 General Description ......................................................................... 1 Applications Information .............................................................. 18 Revision History ............................................................................... 2 Output Adjustment .................................................................... 18 Specifications ..................................................................................... 4 Reference for Converters in Optical Network Control Circuits ......................................................................................... 18 ADR430 Electrical Characteristics ............................................. 4 High Voltage Floating Current Source .................................... 18 ADR431 Electrical Characteristics ............................................. 5 Kelvin Connection ..................................................................... 18 ADR433 Electrical Characteristics ............................................. 6 Dual Polarity References ........................................................... 19 ADR434 Electrical Characteristics ............................................. 7 Programmable Current Source ................................................ 19 ADR435 Electrical Characteristics ............................................. 8 Programmable DAC Reference Voltage .................................. 20 Absolute Maximum Ratings ............................................................ 9 Precision Voltage Reference for Data Converters .................. 20 Thermal Resistance ...................................................................... 9 Precision Boosted Output Regulator ....................................... 21 ESD Caution .................................................................................. 9 Outline Dimensions ....................................................................... 22 Pin Configurations and Function Descriptions ......................... 10 Ordering Guide .......................................................................... 23 Typical Performance Characteristics ........................................... 11 Theory of Operation ...................................................................... 16 Basic Voltage Reference Connections ...................................... 16 REVISION HISTORY 2/2018Rev. M to Rev. N Changes to Table 10 and Precision Boosted Output Regulator Changed VO to VOUT and ADR43x to ADR430/ADR431/ Section .............................................................................................. 20 ADR433/ADR434/ADR435 ......................................... Throughout Changes to Precision Boosted Output Regulator Section......... 21 Changes to Figure 1, Figure 2, and General Description Section ................................................................................................ 1 6/2015Rev. L to Rev. M Changes to Output Current Capacity Parameter and Trim Changes to Ordering Guide .......................................................... 22 Range Parameter, Table 2 ................................................................. 4 Changes to Output Current Capacity Parameter and Trim 7/2014Rev. K to Rev. L Range Parameter, Table 3 ................................................................. 5 Changes to Default Conditions, Typical Performance Changes to Output Current Capacity Parameter and Trim Characteristics Section .................................................................. 10 Range Parameter, Table 4 ................................................................. 6 Changes to Ordering Guide .......................................................... 22 Changes to Output Current Capacity Parameter and Trim Range Parameter, Table 5 ................................................................. 7 5/2014Rev. J to Rev. K Changes to Output Current Capacity Parameter and Trim Deleted ADR439 (Throughout) ...................................................... 1 Changes to Features Section and Table 1 ....................................... 1 Range Parameter, Table 6 ................................................................. 8 Added Pin Configuration and Function Descriptions Section, Deleted Table 7 Renumbered Sequentially ................................... 9 Figure 3, Figure 4, and Table 9 Renumbered Sequentially ....... 10 Changes to Ordering Guide .......................................................... 22 Changes to Figure 14 and Figure 16 ............................................. 12 Changes to Figure 19 Caption and Figure 21 Caption .............. 13 7/2011Rev. I to Rev. J Changes to Theory of Operation Section, Figure 32, Noise Changes to Figure 1 and Figure 2 .................................................... 1 Performance Section, and High Frequency Noise Section ....... 16 Changes to Ordering Guide .......................................................... 23 Changes to Figure 33 Caption, Figure 34, and Turn-On Settling Time Section.................................................................................... 17 5/2011Rev. H to Rev. I Changes to Reference for Converters in Optical Network Added Endnote 1 in Table 2 ............................................................. 4 Control Circuits Section and Programmable Current Source Added Endnote 1 in Table 3 ............................................................. 5 Section .............................................................................................. 19 Added Endnote 1 in Table 4 ............................................................. 6 Rev. N Page 2 of 23