24 MHz Rail-to-Rail Amplifiers with Shutdown Option Data Sheet AD8646/AD8647/AD8648 FEATURES PIN CONFIGURATIONS Offset voltage: 2.5 mV maximum 1 8 OUTA V+ Single-supply operation: 2.7 V to 5.5 V INA 2 7 OUTB AD8646 TOP VIEW +INA 3 6 INB Low noise: 8 nV/Hz (Not to Scale) V 4 5 +INB Wide bandwidth: 24 MHz Slew rate: 11 V/s Figure 1. 8-Lead SOIC and MSOP Short-circuit output current: 120 mA OUTA 1 10 V+ Qualified for automotive applications INA 2 9 OUTB AD8647 No phase reversal +INA 3 8 INB TOP VIEW Low input bias current: 1 pA (Not to Scale) V 4 7 +INB Low supply current per amplifier: 2 mA maximum SDA 5 6 SDB Unity gain stable Figure 2. 10-Lead MSOP APPLICATIONS OUTA 11 1414 OUTD Battery-powered instruments INA 22 1313 IND Multipole filters +INA 33 AADD86486488 1212 +IND ADC front ends TOTOPP VVIIEEWW V+ 44 1111 V (N(Notot ttoo SSccaallee)) Sensors 55 +INB 1010 +INC Barcode scanners 66 99 INB INC ASIC input or output amplifiers 77 88 OUTB OUTC Audio amplifiers Photodiode amplifiers Figure 3. 14-Lead SOIC and TSSOP Datapath/mux/switch control GENERAL DESCRIPTION The AD8646 and the AD8647 are the dual, and the AD8648 is AD8647/AD8648 offer high output drive capability, which is the quad, rail-to-rail, input and output, single-supply amplifiers excellent for audio line drivers and other low impedance featuring low offset voltage, wide signal bandwidth, low input applications. The AD8646 and AD8648 are available for voltage, and low current noise. The AD8647 also has a low automotive applications (see the Ordering Guide). power shutdown function. Applications include portable and low powered instrumenta- The combination of 24 MHz bandwidth, low offset, low noise, tion, audio amplification for portable devices, portable phone and very low input bias current makes these amplifiers useful in headsets, barcode scanners, and multipole filters. The ability to swing rail to rail at both the input and output enables designers a wide variety of applications. Filters, integrators, photodiode amplifiers, and high impedance sensors all benefit from the to buffer CMOS ADCs, DACs, ASICs, and other wide output combination of performance features. AC applications benefit swing devices in single-supply systems. from the wide bandwidth and low distortion. The AD8646/ Rev. F 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. No Tel: 781.329.4700 20062016 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 06527-002 06527-001 06527-003AD8646/AD8647/AD8648 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 ESD Caution...................................................................................6 Applications ....................................................................................... 1 Typical Performance Characteristics ..............................................7 Pin Configurations ........................................................................... 1 Theory of Operation ...................................................................... 15 General Description ......................................................................... 1 Power-Down Operation ............................................................ 15 Revision History ............................................................................... 2 Multiplexing Operation ............................................................. 15 Specifications ..................................................................................... 3 Outline Dimensions ....................................................................... 16 Absolute Maximum Ratings ............................................................ 6 Ordering Guide .......................................................................... 18 Thermal Resistance ...................................................................... 6 REVISION HISTORY Revision History: AD8646/AD8647/AD8648 Revision History: AD8646 8/2016Rev. E to Rev. F 10/2007Rev. 0 to Rev. B Changes to Figure 18 and Figure 21 ............................................... 9 Combined with AD8648 ................................................... Universal Changes to Figure 39 ...................................................................... 12 Added AD8647 ................................................................... Universal Deleted Figure 4 and Figure 7 .......................................................... 7 3/2014Rev. D to Rev. E Deleted Figure 33 ............................................................................ 11 Changes to Differential Input Voltage, Table 3 ............................. 6 8/2007Revision 0: Initial Version 4/2010Rev. C to Rev. D Revision History: AD8648 Changes to Features Section and General Description Section . 1 Updated Outline Dimensions ....................................................... 16 10/2007Rev. A to Rev. B Changes to Ordering Guide Section ............................................ 18 Combined with AD8646 ................................................... Universal Added AD8647 ................................................................... Universal 2/2009Rev. B to Rev. C Deleted Figure 7 ................................................................................. 6 Change to Supply Current Shutdown Mode (AD8647 Only) Deleted Figure 11 ............................................................................... 7 Parameter, Table 1 ............................................................................. 3 Deleted Figure 16 and Figure 17 ..................................................... 8 Change to Supply Current Shutdown Mode (AD8647 Only) Deleted Figure 24 ............................................................................... 9 Parameter, Table 2 ............................................................................. 5 Deleted Figure 27, Figure 28, Figure 31, and Figure 32 ............ 10 Added Figure 50 Renumbered Sequentially .............................. 15 Updated Outline Dimensions ....................................................... 16 6/2007Rev. 0 to Rev. A Changes to Ordering Guide .......................................................... 18 Changes to General Description ..................................................... 1 Updated Outline Dimensions ....................................................... 12 10/2007Revision B: Initial Combined Version Changes to Ordering Guide .......................................................... 12 1/2006Revision 0: Initial Version Rev. F Page 2 of 18