Low Power, Precision Reference and Op Amp ADR821/ADR827 FEATURES FUNCTIONAL BLOCK DIAGRAM 10-lead MSOP ADR821/ADR827 1 10 V+ AMP OUT 400 A supply current R R 1 2 40C to +125C temperature range R 2 9 R 1 2 On-board precision resistors GND 3 8 IN Reference 4 7 +IN ADR821: 2.8 V to 15 V operation NC REF ADR827: 2.7 V to 15 V operation V 5 6 REF OUT 0.2% initial accuracy NC = NO CONNECT 15 ppm/C temperature drift maximum Figure 1. +5 mA/3 mA output drive Amplifier ADR821 2.8 V to 15 V operation Table 1. Selection Table 2.8 V to 15 V single-supply operation Reference ADR827 Reference Reference Temperature 2.7 V to 15 V operation Part No. V Accuracy Coefficient OUT 2.7 V to 15 V single-supply operation ADR827ARMZ 1.25 V 0.4% 30 ppm/C Rail-to-rail input and output ADR827BRMZ 1.25 V 0.2% 15 ppm/C 500 V offset voltage maximum ADR821ARMZ 2.50 V 0.4% 30 ppm/C 50 nA bias current maximum ADR821BRMZ 2.50 V 0.2% 15 ppm/C Unity gain stable No phase reversal APPLICATIONS Battery-powered instrumentation Portable medical instrumentation Data acquisition systems Industrial process controls Automotive applications GENERAL DESCRIPTION The ADR821/ADR827 combines a precision voltage reference Available with the reference at 1.25 V and at 2.5 V, the and an op amp in a 10-lead mini small outline package (MSOP). ADR821/ADR827 also come in two grades. The reference on The reference and the op amp can be operated independently, the A grade offers 30 ppm/C temperature drift performance offering the user a range of flexibility when arranging the and 0.4% initial accuracy. The B grade provides a tighter combination. Featuring a combined operating current of less temperature drift performance of 15 ppm/C and only 0.2% than 400 A and 15 ppm/C temperature drift on the reference, initial accuracy. All versions operate from 40C to +125C. the ADR821/ADR827 are ideally suited for applications requir- ing precision and low power. Rev. 0 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. 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Trademarks and registered trademarks are the property of their respective owners. 06665-001ADR821/ADR827 TABLE OF CONTENTS Features .............................................................................................. 1 Absolute Maximum Ratings ............................................................9 Applications....................................................................................... 1 Thermal Resistance.......................................................................9 Functional Block Diagram .............................................................. 1 ESD Caution...................................................................................9 General Description ......................................................................... 1 Pin Configuration and Function Descriptions........................... 10 Revision History ............................................................................... 2 Typical Performance Characteristics ........................................... 11 Specifications..................................................................................... 3 Reference ..................................................................................... 11 ADR821 Electrical CharacteristicsReference ....................... 3 Amplifier (AD821/AD827)....................................................... 15 ADR821 Electrical CharacteristicsAmplifier Applications Information .............................................................. 18 (VS = 2.8 V)................................................................................. 4 +2.5 V and 2.5 V Outputs (ADR821) ................................... 18 ADR821 Electrical CharacteristicsAmplifier 2.5 V and 5.0 V Outputs (ADR821)......................................... 18 (VS = 15 V).................................................................................. 5 Multiple 2.5 V Outputs (ADR821)........................................... 18 ADR827 Electrical CharacteristicsReference ....................... 6 Outline Dimensions....................................................................... 19 ADR827 Electrical CharacteristicsAmplifier (V = 2.7 V)................................................................................. 7 S Ordering Guide .......................................................................... 19 ADR827 Electrical CharacteristicsAmplifier (V = 15 V).................................................................................. 8 S REVISION HISTORY 10/07Revision 0: Initial Version Rev. 0 Page 2 of 20