High Precision 10 V Reference AD587 FEATURES FUNCTIONAL BLOCK DIAGRAM NOISE Laser trimmed to high accuracy +V IN REDUCTION 10.000 V 5 mV (U grade) 2 8 Trimmed temperature coefficient R S 5 ppm/C maximum (U grade) A1 6 V OUT Noise-reduction capability R F Low quiescent current: 4 mA maximum Output trim capability R T TRIM 5 MIL-STD-883-compliant versions available R I AD587 4 GND NOTE PIN 1, PIN 3, AND PIN 7 ARE INTERNAL TEST POINTS. NO CONNECTIONS TO THESE POINTS. Figure 1. GENERAL DESCRIPTION PRODUCT HIGHLIGHTS The AD587 represents a major advance in state-of-the-art 1. Laser trimming of both initial accuracy and temperature monolithic voltage references. Using a proprietary ion- coefficients. This laser trimming results in very low errors implanted buried Zener diode and laser wafer trimming of high over temperature without the use of external components. stability thin-film resistors, the AD587 provides outstanding The AD587U guarantees 14 mV maximum total error performance at low cost. between 55C and +125C. 2. Optional fine trim connection. This connection is designed The AD587 offers much higher performance than most other for applications requiring higher precision. 10 V references. Because the AD587 uses an industry-standard 3. Instant upgrade of any system using an industry-standard pinout, many systems can be upgraded instantly with the AD587. pinout 10 V reference. The buried Zener approach to reference design provides lower 4. Very low output noise. AD587 output noise is typically noise and drift than band gap voltage references. The AD587 4 V p-p. A noise-reduction pin is provided for additional offers a noise-reduction pin that can be used to further reduce noise filtering using an external capacitor. the noise level generated by the buried Zener. 5. MIL-STD-883-compliant versions available. Refer to the The AD587 is recommended for use as a reference for 8-bit, Analog Devices Military/Aerospace Reference Manual for 10-bit, 12-bit, 14-bit, or 16-bit DACs that require an external detailed specifications. precision reference. The device is also ideal for successive approximation or integrating ADCs with up to 14 bits of accuracy. In general, it offers better performance than standard on-chip references. The AD587J and AD587K are specified for operation from 0C to 70C, and the AD587U is specified for operation from 55C to +125C. The AD587JQ and AD587UQ models are available in 8-lead CERDIP. Other models are available in an 8-lead SOIC package for surface-mount applications, or in an 8-lead PDIP. Rev. H 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 19982007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 00530-001AD587 TABLE OF CONTENTS Features .............................................................................................. 1 Noise Performance and Reduction .............................................6 Functional Block Diagram .............................................................. 1 Turn-On Time ...............................................................................7 General Description ......................................................................... 1 Dynamic Performance..................................................................7 Product Highlights ........................................................................... 1 Load Regulation ............................................................................8 Revision History ............................................................................... 2 Temperature Performance............................................................8 Specifications..................................................................................... 3 Negative Reference Voltage from an AD587 .............................9 Absolute Maximum Ratings............................................................ 4 Applications Information .............................................................. 10 ESD Caution.................................................................................. 4 Using the AD587 with Converters........................................... 10 Pin Configuration and Function Descriptions............................. 5 Outline Dimensions....................................................................... 11 Theory of Operation ........................................................................ 6 Ordering Guide .......................................................................... 12 Applying the AD587 .................................................................... 6 REVISION HISTORY 9/07Rev. G to Rev. H 7/04Rev. E to Rev. F Deleted AD587L Grade ..................................................... Universal Changes to Ordering Guide .............................................................3 Change to Product Highlights .........................................................1 7/03Rev. D to Rev. E. Changes to the Negative Reference Voltage from an Deletion of S and T Grades ............................................... Universal AD587 Section ..............................................................................9 Edits to Ordering Guide ...................................................................2 Changes to Figure 19.......................................................................10 Deletion of Die Specifications .........................................................3 Changes to Figure 21 and Figure 22..............................................10 Edits to Figure 3.................................................................................4 Updated Outline Dimensions ........................................................11 Updated Outline Dimensions..........................................................9 Changes to Ordering Guide ...........................................................12 4/05Rev. F to Rev. G Updated Format.................................................................. Universal Added Table 3.....................................................................................5 Updated Outline Dimensions ........................................................11 Changes to Ordering Guide ...........................................................13 Rev. H Page 2 of 12