Dual Single-Supply Audio Operational Amplifier SSM2135 FEATURES PIN CONNECTIONS Excellent sonic characteristics OUT A 1 8 V+ High output drive capability IN A 2 SSM2135 7 OUT B TOP VIEW 5.2 nV/Hz equivalent input noise 1 kHz +IN A 3 6 IN B (Not to Scale) V/GND 4 5 +IN B 0.003% THD + N (V = 1 V p-p 1 kHz) OUT 3.5 MHz gain bandwidth Figure 1. 8-Lead Narrow Body SOIC (R Suffix) Unity-gain stable Low cost APPLICATIONS Multimedia audio systems Microphone preamplifiers Headphone drivers Differential line receivers Balanced line drivers Audio ADC input buffers Audio DAC l-V converters and filters Pseudoground generators GENERAL DESCRIPTION The SSM2135 dual audio operational amplifier permits excel- and portable digital audio units, the SSM2135 can perform lent performance in portable or low power audio systems, with preamplification, headphone and speaker driving, and balanced an operating supply range of 4 V to 36 V or 2 V to 18 V. line driving and receiving. Additionally, the device is ideal for The unity-gain stable device has very low voltage noise of input signal conditioning in single-supply, -, analog-to- 5.2 nV/Hz, and total harmonic distortion plus noise below digital converter subsystems such as the AD1877. The SSM2135 0.01% over normal signal levels and loads. Such characteristics makes an ideal single-supply stereo output amplifier for audio are enhanced by wide output swing and load drive capability. digital-to-analog converters (DACs) because of its low noise and distortion. A unique output stage permits output swing approaching the rail under moderate load conditions. Under severe loading, The SSM2135 is available in an 8-lead plastic SOIC package the SSM2135 still maintains a wide output swing with ultralow and is guaranteed for operation over the extended industrial distortion. Particularly well suited for computer audio systems temperature range of 40C to +85C. FUNCTIONAL BLOCK DIAGRAM V+ OUTx +INx 9V 9V INx V/GND Figure 2. Rev. G 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 20032011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 00349-001 00349-002SSM2135 TABLE OF CONTENTS Features .............................................................................................. 1 Thermal Resistance.......................................................................4 Applications....................................................................................... 1 ESD Caution...................................................................................4 Pin Connections ............................................................................... 1 Typical Performance Characteristics ..............................................5 General Description ......................................................................... 1 Applications Information .............................................................. 10 Functional Block Diagram .............................................................. 1 Application Circuits ................................................................... 10 Revision History ............................................................................... 2 Outline Dimensions....................................................................... 14 Specifications..................................................................................... 3 Ordering Guide .......................................................................... 14 Absolute Maximum Ratings............................................................ 4 REVISION HISTORY 4/11Rev. F to Rev. G Changes to Applications Information Section, Low Noise Stereo Changes to Figure 36...................................................................... 12 Headphone Driver Amplifier Section, Figure 31, and Figure 32 ........................................................................................................... 10 2/09Rev. E to Rev. F Changes to Low Noise Microphone Preamplifier Section, Updated Format..................................................................Universal Figure 33, and Figure 34 ................................................................ 11 Changes to Features Section, General Description Section, and Changes to Figure 37...................................................................... 12 Figure 1 Caption ............................................................................... 1 Deleted Spice Macromodel Section ............................................. 12 Changes to Specifications Section Conditions ............................. 3 Changes to Digital Volume Control Circuit Section, Figure 38, Changed A Symbol to A ............................................................. 3 and Figure 39................................................................................... 13 VO V Changes to Supply Current Parameter, Table 1 ............................ 3 Updated Outline Dimensions....................................................... 14 Deleted ESD Ratings Table.............................................................. 3 Changes to Ordering Guide .......................................................... 14 Changes to Figure 4 and Figure 5................................................... 5 Changes to Figure 9.......................................................................... 6 2/03Rev. D to Rev. E Changes to Figure 15, Figure 13, and Figure 18 ........................... 7 Removed 8-Lead Plastic DIP Package .............................Universal Changes to Figure 21, Figure 24 Caption, and Figure 25 ............ 8 Edits to Thermal Characteristics.....................................................4 Changes to Figure 27 and Figure 28............................................... 9 Edits to Outline Dimensions......................................................... 14 Deleted Figure 5 Renumbered Sequentially............................... 10 Updated Ordering Guide .............................................................. 14 Deleted 18-Bit Stereo CD-DAC Output Amplifier Section...... 10 Rev. G Page 2 of 16