Low Cost, 250 mA Output, Single-Supply Amplifiers AD8531/AD8532/AD8534 FEATURES PIN CONFIGURATIONS Single-supply operation: 2.7 V to 6 V AD8531 OUT A 1 5 V+ High output current: 250 mA V 2 Low supply current: 750 A/amplifier Wide bandwidth: 3 MHz +IN A 3 4 IN A Slew rate: 5 V/s No phase reversal Figure 1. 5-Lead SC70 and 5-Lead SOT-23 (KS and RJ Suffixes) Low input currents Unity gain stable Rail-to-rail input and output NC 1 8 NC AD8531 IN A 2 7 V+ APPLICATIONS +IN A 3 6 OUT A V 4 5 NC Multimedia audio LCD drivers NC = NO CONNECT ASIC input or output amplifiers Figure 2. 8-Lead SOIC Headphone drivers (R Suffix) GENERAL DESCRIPTION OUT A 1 8 V+ The AD8531, AD8532, and AD8534 are single, dual, and quad IN A 2 7 OUT B rail-to-rail input/output single-supply amplifiers featuring +IN A 3 6 IN B 250 mA output drive current. This high output current makes V 4 5 +IN B these amplifiers excellent for driving either resistive or capacitive loads. AC performance is very good with 3 MHz bandwidth, AD8532 5 V/s slew rate, and low distortion. All are guaranteed to operate Figure 3. 8-Lead SOIC, 8-Lead TSSOP, and 8-Lead MSOP (R, RU, and RM Suffixes) from a 3 V single supply as well as a 5 V supply. The very low input bias currents enable the AD853x to be used for integrators, diode amplification, and other applications requiring OUT A 1 14 OUT D low input bias current. Supply current is only 750 A per IN A 2 13 IN D amplifier at 5 V, allowing low current applications to control +IN A 3 12 +IN D high current loads. V+ 4 AD8534 11 V Applications include audio amplification for computers, sound +IN B 5 10 +IN C ports, sound cards, and set-top boxes. The AD853x family is 6 IN B 9 IN C very stable, and it is capable of driving heavy capacitive loads OUT B 7 8 OUT C such as those found in LCDs. Figure 4. 14-Lead SOIC and 14-Lead TSSOP The ability to swing rail-to-rail at the inputs and outputs enables (R and RU Suffixes) designers to buffer CMOS DACs, ASICs, or other wide output swing devices in single-supply systems. The AD8531/AD8532/AD8534 are specified over the extended industrial temperature range (40C to +85C). The AD8531 is available in 8-lead SOIC, 5-lead SC70, and 5-lead SOT-23 packages. The AD8532 is available in 8-lead SOIC, 8-lead MSOP, and 8-lead TSSOP surface-mount packages. The AD8534 is available in narrow 14-lead SOIC and 14-lead TSSOP surface-mount packages. Rev. F 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. 01099-001 01099-002 01099-003 01099-004AD8531/AD8532/AD8534 TABLE OF CONTENTS Features .............................................................................................. 1 Calculating Power by Measuring Ambient and Case Temperature ................................................................................ 12 Applications....................................................................................... 1 Calculating Power by Measuring Supply Current ................. 12 General Description ......................................................................... 1 Input Overvoltage Protection ................................................... 12 Pin Configurations ........................................................................... 1 Output Phase Reversal............................................................... 13 Revision History ............................................................................... 2 Capacitive Load Drive ............................................................... 13 Specifications..................................................................................... 3 Applications Information .............................................................. 14 Electrical Characteristics............................................................. 3 High Output Current, Buffered Reference/Regulator........... 14 Absolute Maximum Ratings............................................................ 5 Single-Supply, Balanced Line Driver ....................................... 14 Thermal Resistance ...................................................................... 5 Single-Supply Headphone Amplifier....................................... 15 ESD Caution.................................................................................. 5 Single-Supply, 2-Way Loudspeaker Crossover Network....... 15 Typical Performance Characteristics ............................................. 6 Direct Access Arrangement for Telephone Line Interface ... 16 Theory of Operation ...................................................................... 11 Outline Dimensions ....................................................................... 17 Short-Circuit Protection............................................................ 11 Ordering Guide .......................................................................... 20 Power Dissipation....................................................................... 11 Power Calculations for Varying or Unknown Loads............. 12 REVISION HISTORY 1/08Rev. E to Rev. F Changes to Layout ............................................................................ 5 Changes to Figure 12 and Figure 13............................................... 7 Changes to Figure 38...................................................................... 11 Changes to Input Overvoltage Protection Section..................... 12 Changes to Figure 43...................................................................... 14 Updated Outline Dimensions ....................................................... 17 Changes to Ordering Guide .......................................................... 20 4/05Rev. D to Rev. E Updated Format..................................................................Universal Changes to Pin Configurations....................................................... 1 Changes to Table 4............................................................................ 5 Updated Outline Dimensions ....................................................... 18 Changes to Ordering Guide .......................................................... 19 10/02Rev. C to Rev. D Deleted 8-Lead PDIP (N-8) .............................................. Universal Deleted 14-Lead PDIP (N-14) .......................................... Universal Edits to Figure 34...............................................................................9 Updated Outline Dimensions ........................................................15 8/96Revision 0: Initial Version Rev. F Page 2 of 20