Ultralow Noise, High Accuracy Voltage References Data Sheet ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 FEATURES PIN CONFIGURATIONS ADR4520/ADR4525/ Maximum temperature coefficient (TCVOUT): ADR4530/ADR4533/ 0.8 ppm/C (D grade 0C to 70C) ADR4540/ADR4550 1 ppm/C (C grade 0C to 70C) NIC 1 8 DNC 2 ppm/C (B grade 40C to +125C) V 2 7 NIC IN NIC 3 6 V 4 ppm/C (A grade 40C to +125C) OUT TOP VIEW (Not to Scale) 4 5 GND NIC Output noise (0.1 Hz to 10 Hz): 1 V p-p at VOUT of 2.048 V typical NOTES 1. NIC = NOT INTERNALLY CONNECTED. Initial output voltage error: THIS PIN IS NOT CONNECTED INTERNALLY. B, C, D grade: 0.02% (maximum) 2. DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN. Input voltage range: 3 V to 15 V Figure 1. 8-Lead SOIC Pin Configuration Operating temperature: ADR4520/ADR4525/ ADR4530/ADR4533/ A grade and B grade: 40C to +125C ADR4540/ADR4550 C grade and D grade: 0C to +70C DNC Output current: +10 mA source/10 mA sink 8 Low quiescent current: 950 A (maximum) DNC 1 7 VOUT FORCE Low dropout voltage: 300 mV at 2 mA (VOUT 3 V) V 2 6 IN VOUT SENSE 8-lead SOIC and LCC package GND FORCE 3 5 N I C AEC-Q100 qualified for automotive applications 4 Long-term drift: 8 ppm typical at 4500 hours GND SENSE NOTES APPLICATIONS 1. NIC = NOT INTERNALLY CONNECTED. THIS PIN IS NOT CONNECTED INTERNALLY. Precision data acquisition systems 2. DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN. High resolution data converters Figure 2. 8-Lead LCC Pin Configuration High precision measurement devices The ADR4525, ADR4540, and ADR4550 are also available in D, Industrial instrumentation which are in 8 lead LCC package, and C grade with a temperature Medical devices range of 0C to 70C. The ADR4525W, available in an 8-lead Automotive battery monitoring SOIC package, is qualified for automotive applications. GENERAL DESCRIPTION The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ Table 1. Selection Guide ADR4550 devices are high precision, low power, low noise Model Output Voltage (V) Grade ADR4520 2.048 A, B voltage references featuring 0.02% B, C, and D grade ADR4525 2.5 A, B, C, D maximum initial error, excellent temperature stability, and low ADR4525W 2.5 B output noise. ADR4530 3.0 A, B This family of voltage references uses an innovative core topology ADR4533 3.3 A, B to achieve high accuracy while offering industry-leading ADR4540 4.096 A, B, C, D temperature stability and noise performance. The low, thermally ADR4550 5.0 A, B, C, D induced output voltage hysteresis and low long-term output Table 2. Voltage Reference Choices from Analog Devices, Inc. voltage drift of the devices also improve system accuracy over VOUT (V) Micropower Low Power Ultralow Noise time and temperature variations. 2.048 ADR3420 ADR360 ADR440 A maximum operating current of 950 A and a maximum low LT6656 LTC6652 LTC6655 dropout voltage of 300 mV allow the devices to function very LT6654 well in portable equipment. 2.5 ADR3425 ADR361 ADR441 The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ LT1461 LTC6652 LTC6655 ADR4550 series of references are each provided in an 8-lead LT6656 LT6654 SOIC and are available in a wide range of output voltages, all of 5.0 ADR3450 ADR365 ADR445 which are specified over the extended industrial temperature LT1461 LTC6652 LTC6655 LT6656 LT6654 range of 40C to +125C. Rev. D 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. Tel: 781.329.4700 20122021 Analog Devices, Inc. All rights reserved. No license is granted by implication or otherwise under any patent or patent rights of Analog Technical Support www.analog.com Devices. Trademarks and registered trademarks are the property of their respective owners. 10203-001 10203-057ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 ADR4530 ..................................................................................... 19 Applications ...................................................................................... 1 ADR4533 ..................................................................................... 22 General Description ......................................................................... 1 ADR4540 ..................................................................................... 25 Pin Configurations ........................................................................... 1 ADR4550 ..................................................................................... 29 Revision History ............................................................................... 2 Terminology .................................................................................... 33 Specifications .................................................................................... 4 Applications Information ............................................................. 34 ADR4520 Electrical Characteristics ........................................... 4 Basic Voltage Reference Connection ...................................... 34 ADR4525 Electrical Characteristics ........................................... 5 Input and Output Capacitors ................................................... 34 ADR4530 Electrical Characteristics ........................................... 6 Location of Reference in System .............................................. 34 ADR4533 Electrical Characteristics ........................................... 7 Power Dissipation ...................................................................... 34 ADR4540 Electrical Characteristics ........................................... 8 Sample Applications .................................................................. 34 ADR4550 Electrical Characteristics ........................................... 9 Long-Term Drift ........................................................................ 35 Absolute Maximum Ratings ......................................................... 10 Thermal Hysteresis .................................................................... 36 Thermal Resistance .................................................................... 10 Humidity Sensitivity .................................................................. 37 ESD Caution................................................................................ 10 Power Cycle Hysteresis ............................................................. 38 Pin Configurations and Function Descriptions ......................... 11 Outline Dimensions ....................................................................... 39 Typical Performance Characteristics ........................................... 12 Ordering Guide .......................................................................... 39 ADR4520 ..................................................................................... 12 Automotive Products ................................................................ 40 ADR4525 ..................................................................................... 15 REVISION HISTORY 1/2021Rev. C to Rev. D 3/2020Rev. B to Rev. C Added 8-Lead LCC Package ........................................ Throughout Added ADR4540 C Grade and ADR4550 C Grade . Throughout Changes to Features Section, General Description Section, and Changes to Table 4 ............................................................................ 5 Table 1 .......................................................................................................... 1 Changes to Table 7 ............................................................................ 8 Added Figure 2 Renumbered Sequentially .......................................... 1 Changes to Table 8 ............................................................................ 9 Changes to Table 4 ........................................................................... 5 Deleted Figure 32, Renumbered Sequentially ............................ 18 Changes to Table 7 ........................................................................... 8 Changes to Figure 39 ..................................................................... 19 Changes to Table 8 ........................................................................... 9 Changes to Figure 52 ..................................................................... 22 Changes to Table 9 and Table 10 ................................................. 10 Added Figure 69, Renumbered Sequentially .............................. 26 Added Figure 4 and Table 11 Renumbered Sequentially ........ 11 Changes to Figure 79 ..................................................................... 28 Changes to Typical Performance Characteristics Section ........ 12 Added Figure 83 ............................................................................. 29 Changes to Figure 110 and Figure 11 .......................................... 35 Updated Ordering Guide .............................................................. 41 Added Figure 112 ........................................................................... 35 Changes to Figure 113 to Figure 116 ........................................... 36 12/2018Rev. A to Rev. B Added Figure 117 ........................................................................... 36 Changes to Features Section, Table 1, and Table 2 ...................... 1 Added Figure 118 ........................................................................... 37 Changes to Table 3 ............................................................................ 4 Changes to Figure 120 and Figure 121 ........................................ 37 Changes to Table 4 ............................................................................ 5 Changes to Figure 122 ................................................................... 38 Changes to Table 5 ............................................................................ 6 Added Figure 124 ........................................................................... 38 Changes to Table 6 ............................................................................ 7 Changes to Ordering Guide .......................................................... 38 Changes to Table 7 ............................................................................ 8 Changes to Table 8 ............................................................................ 9 Rev. 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