Ultralow Noise XFET Voltage References with Current Sink and Source Capability ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 FEATURES PIN CONFIGURATIONS Low noise (0.1 Hz to 10.0 Hz): 3.5 V p-p 2.5 V output TP 1 8 TP ADR43x V 2 7 NC No external capacitor required IN TOP VIEW NC 3 6 V OUT Low temperature coefficient (Not to Scale) GND 4 5 TRIM A Grade: 10 ppm/C maximum B Grade: 3 ppm/C maximum NOTES 1. NC = NO CONNECT Load regulation: 15 ppm/mA 2. TP = TEST PIN (DO NOT CONNECT) Line regulation: 20 ppm/V Figure 1. 8-Lead MSOP (RM-8) Wide operating range ADR430: 4.1 V to 18 V TP 1 8 TP ADR431: 4.5 V to 18 V ADR43x V 2 7 NC IN ADR433: 5.0 V to 18 V TOP VIEW NC 3 6 V OUT (Not to Scale) ADR434: 6.1 V to 18 V GND 4 5 TRIM ADR435: 7.0 V to 18 V NOTES ADR439: 6.5 V to 18 V 1. NC = NO CONNECT 2. TP = TEST PIN (DO NOT CONNECT) High output source and sink current: +30 mA and 20 mA Figure 2. 8-Lead SOIC N (R-8) Wide temperature range: 40C to +125C APPLICATIONS Precision data acquisition systems High resolution data converters Medical instruments Industrial process control systems Optical control circuits Precision instruments GENERAL DESCRIPTION The ADR43x series is a family of XFET voltage references Table 1. Selection Guide featuring low noise, high accuracy, and low temperature drift Temperature performance. Using Analog Devices, Inc., patented temperature Output Coefficient drift curvature correction and XFET (eXtra implanted junction Model Voltage (V) Accuracy (mV) (ppm/C) FET) technology, voltage change vs. temperature nonlinearity in ADR430A 2.048 3 10 the ADR43x is minimized. ADR430B 2.048 1 3 ADR431A 2.500 3 10 The XFET references operate at lower current (800 A) and ADR431B 2.500 1 3 lower supply voltage headroom (2 V) than buried Zener ADR433A 3.000 4 10 references. Buried Zener references require more than 5 V ADR433B 3.000 1.5 3 headroom for operation. The ADR43x XFET references are ADR434A 4.096 5 10 the only low noise solutions for 5 V systems. ADR434B 4.096 1.5 3 The ADR43x family has the capability to source up to 30 mA of ADR435A 5.000 6 10 output current and sink up to 20 mA. It also comes with a trim ADR435B 5.000 2 3 terminal to adjust the output voltage over a 0.5% range without ADR439A 4.500 5.5 10 compromising performance. ADR439B 4.500 2 3 The ADR43x is available in 8-lead MSOP and 8-lead narrow SOIC packages. All versions are specified over the extended industrial temperature range of 40C to +125C. Rev. E 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 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 20032009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 04500-041 04500-001ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 TABLE OF CONTENTS Noise Performance ..................................................................... 15 Features .............................................................................................. 1 High Frequency Noise ............................................................... 15 Applications ....................................................................................... 1 Turn-On Time ............................................................................ 16 Pin Configurations ........................................................................... 1 Applications Inforamtion .............................................................. 17 General Description ......................................................................... 1 Output Adjustment .................................................................... 17 Revision History ............................................................................... 2 Reference for Converters in Optical Network Control Specif icat ions ..................................................................................... 3 Circ uits ......................................................................................... 17 ADR430 Electrical Characteristics ............................................. 3 Negative Precision Reference Without Precision Resistors .. 17 ADR431 Electrical Characteristics ............................................. 4 High Voltage Floating Current Source .................................... 18 ADR433 Electrical Characteristics ............................................. 5 Kelvin Connection ..................................................................... 18 ADR434 Electrical Characteristics ............................................. 6 Dual Polarity References ........................................................... 18 ADR435 Electrical Characteristics ............................................. 7 Programmable Current Source ................................................ 19 ADR439 Electrical Characteristics ............................................. 8 Programmable DAC Reference Voltage .................................. 19 Absolute Maximum Ratings ............................................................ 9 Precision Voltage Reference for Data Converters .................. 20 Thermal Resistance ...................................................................... 9 Precision Boosted Output Regulator ....................................... 20 ESD Caution .................................................................................. 9 Outline Dimensions ....................................................................... 21 Typical Performance Characteristics ........................................... 10 Ordering Guide .......................................................................... 22 Theory of Operation ...................................................................... 15 Basic Voltage Reference Connections ...................................... 15 REVISION HISTORY 9/04Rev. A to Rev. B 1/09Rev. D to Rev. E Added New Grade .............................................................. Universal Added High Frequency Noise Section and Equation 3 Changes to Specifications ................................................................. 3 Renumbered Sequentially .............................................................. 15 Replaced Figure 3, Figure 4, Figure 5 ........................................... 10 Inserted Figure 31, Figure 32, and Figure 33 Renumbered Updated Ordering Guide .............................................................. 21 Sequentially ..................................................................................... 16 Changes to the Ordering Guide .................................................... 22 6/04Rev. 0 to Rev. A Changes to Format ............................................................. Universal 12/07Rev. C to Rev. D Changes to the Ordering Guide ................................................... 20 Changes to Initial Accuracy and Ripple Rejection Ratio Parameters in Table 2 through Table 7 .......................................... 3 12/03Revision 0: Initial Version Changes to Table 9 ............................................................................ 9 Changes to Theory of Operation Section .................................... 15 Updated Outline Dimensions ....................................................... 20 8/06Rev. B to Rev. C Updated Format .................................................................. Universal Changes to Table 1 ............................................................................ 1 Changes to Table 3 ............................................................................ 4 Changes to Table 4 ............................................................................ 5 Changes to Table 7 ............................................................................ 8 Changes to Figure 26 ...................................................................... 14 Changes to Figure 31 ...................................................................... 16 Updated Outline Dimensions ....................................................... 20 Changes to Ordering Guide .......................................................... 21 Rev. E Page 2 of 24