SSM2135 반도체 회로 부품 판매점
Dual Single-Supply Audio Operational Amplifier
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 Analog |
Dual Single-Supply
Audio Operational Amplifier
SSM2135
FEATURES
Excellent sonic characteristics
High output drive capability
5.2 nV/√Hz equivalent input noise @ 1 kHz
0.003% THD + N (VOUT = 1 V p-p @ 1 kHz)
3.5 MHz gain bandwidth
Unity-gain stable
Low cost
PIN CONNECTIONS
OUT A 1
8 V+
–IN A 2 SSM2135 7 OUT B
+IN A 3 TOP VIEW 6 –IN B
(Not to Scale)
V–/GND 4
5 +IN B
Figure 1. 8-Lead Narrow Body SOIC (R Suffix)
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-
lent performance in portable or low power audio systems, with
an operating supply range of 4 V to 36 V or ±2 V to ±18 V.
The unity-gain stable device has very low voltage noise of
5.2 nV/√Hz, and total harmonic distortion plus noise below
0.01% over normal signal levels and loads. Such characteristics
are enhanced by wide output swing and load drive capability.
A unique output stage permits output swing approaching the
rail under moderate load conditions. Under severe loading,
the SSM2135 still maintains a wide output swing with ultralow
distortion. Particularly well suited for computer audio systems
and portable digital audio units, the SSM2135 can perform
preamplification, headphone and speaker driving, and balanced
line driving and receiving. Additionally, the device is ideal for
input signal conditioning in single-supply, Σ-Δ, analog-to-
digital converter subsystems such as the AD1877. The SSM2135
makes an ideal single-supply stereo output amplifier for audio
digital-to-analog converters (DACs) because of its low noise
and distortion.
The SSM2135 is available in an 8-lead plastic SOIC package
and is guaranteed for operation over the extended industrial
temperature range of −40°C to +85°C.
FUNCTIONAL BLOCK DIAGRAM
V+
+INx
–INx
9V 9V
OUTx
Figure 2.
V–/GND
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
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2003–2011 Analog Devices, Inc. All rights reserved.
SSM2135
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Pin Connections ............................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 4
REVISION HISTORY
4/11—Rev. F to Rev. G
Changes to Figure 36...................................................................... 12
2/09—Rev. E to Rev. F
Updated Format..................................................................Universal
Changes to Features Section, General Description Section, and
Figure 1 Caption ............................................................................... 1
Changes to Specifications Section Conditions ............................. 3
Changed AVO Symbol to AV............................................................. 3
Changes to Supply Current Parameter, Table 1 ............................ 3
Deleted ESD Ratings Table.............................................................. 3
Changes to Figure 4 and Figure 5................................................... 5
Changes to Figure 9.......................................................................... 6
Changes to Figure 15, Figure 13, and Figure 18 ........................... 7
Changes to Figure 21, Figure 24 Caption, and Figure 25 ............ 8
Changes to Figure 27 and Figure 28............................................... 9
Deleted Figure 5; Renumbered Sequentially............................... 10
Deleted 18-Bit Stereo CD-DAC Output Amplifier Section ...... 10
Thermal Resistance .......................................................................4
ESD Caution...................................................................................4
Typical Performance Characteristics ..............................................5
Applications Information .............................................................. 10
Application Circuits ................................................................... 10
Outline Dimensions ....................................................................... 14
Ordering Guide .......................................................................... 14
Changes to Applications Information Section, Low Noise Stereo
Headphone Driver Amplifier Section, Figure 31, and Figure 32
........................................................................................................... 10
Changes to Low Noise Microphone Preamplifier Section,
Figure 33, and Figure 34 ................................................................ 11
Changes to Figure 37...................................................................... 12
Deleted Spice Macromodel Section ............................................. 12
Changes to Digital Volume Control Circuit Section, Figure 38,
and Figure 39................................................................................... 13
Updated Outline Dimensions....................................................... 14
Changes to Ordering Guide .......................................................... 14
2/03—Rev. D to Rev. E
Removed 8-Lead Plastic DIP Package .............................Universal
Edits to Thermal Characteristics.....................................................4
Edits to Outline Dimensions......................................................... 14
Updated Ordering Guide .............................................................. 14
Rev. G | Page 2 of 16
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