SSM2250RUZ-REEL

Manufacturer Part NumberSSM2250RUZ-REEL
DescriptionIC AMP AUDIO PWR 1.5W AB 14TSSOP
ManufacturerAnalog Devices Inc
SeriesSoundMAX®
TypeClass AB
SSM2250RUZ-REEL datasheet
 


Specifications of SSM2250RUZ-REEL

Output Type1-Channel (Mono) with Stereo HeadphonesMax Output Power X Channels @ Load1.5W x 1 @ 8 Ohm; 90mW x 2 @ 32 Ohm
Voltage - Supply2.7 V ~ 6 VFeaturesDepop, Shutdown
Mounting TypeSurface MountPackage / Case14-TSSOP
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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FEATURES
Part of SoundMAX® audio solution for desktop computers
Mono 1.5 W differential or stereo 250 mW output
Single-supply operation: 2.7 V to 6 V
Low shutdown current = 60 μA
PC99 compliant
Low distortion: 0.2% THD at 1.5 W
Wide bandwidth: 4 MHz
Unity-gain stable
APPLICATIONS
Desktop, portable, and palmtop computers
Sound cards
Communication headsets
2-way communications
Hand-held games
GENERAL DESCRIPTION
The SSM2250 is intended for use in desktop computers that
have basic audio functions. It is also ideal for any audio system
that needs to provide both an internal monaural speaker and
a stereo line or headphone output. Combined with an AC97
codec, it provides a PC audio system that meets the PC99
requirements. The SSM2250 is compact and requires a mini-
mum of external components.
The SSM2250 features an audio amplifier capable of delivering
1.5 W of low distortion power into a mono 4 Ω bridge-tied load
(BTL) or 2 × 90 mW into stereo 32 Ω single-ended load (SE)
headphones. Both amplifiers provide rail-to-rail outputs for
maximum dynamic range from a single supply. The balanced
output provides maximum output from a 5 V supply and
eliminates the need for a coupling capacitor.
The SSM2250 can automatically switch between an internal
mono speaker and external headphones. The device can run
from a single supply, ranging from 2.7 V to 6 V, with an active
supply current of 9 mA typical. The ability to shut down the
amplifiers (60 μA shutdown current) makes the SSM2250 an
ideal speaker amplifier for battery-powered applications.
The SSM2250 is specified over the industrial (−40°C to +85°C)
temperature range. It is available in a 14-lead TSSOP and a
10-lead, surface mount MSOP package.
Rev. A
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. Trademarks and
registered trademarks are the property of their respective owners.
Mono 1.5 W/Stereo 250 mW
Power Amplifier
PIN CONFIGURATIONS
LEFT IN
1
10
SHUTDOWN
2
9
SSM2250
SE/BTL
3
TOP VIEW
8
(Not to Scale)
GND
4
7
RIGHT IN
5
6
Figure 1. 10-Lead MSOP Pin Configuration
(RM Suffix)
NC
1
14
LEFT IN
SHUTDOWN
SSM2250
SE/BTL
+GND
RIGHT IN
NC
7
8
NC = NO CONNECT
Figure 2. 14-Lead TSSOP Pin Configuration
(RU Suffix)
FUNCTIONAL BLOCK DIAGRAM
LEFT IN
A1
BYPASS CAP
RIGHT IN
A3
SWITCHING
CIRCUITRY
V
CLICK AND POP
DD
REDUCTION
BIAS
Figure 3.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
© 2005 Analog Devices, Inc. All rights reserved.
SSM2250
LEFT OUT/BTL–
V
DD
BTL+
BYPASS
RIGHT OUT
NC
LEFT OUT/BTL
V
DD
BTL+
BYPASS
RIGHT OUT
NC
V
DD
LEFT SE/
MONO BTL
OUT–
MONO BTL
A2
OUT+
V
DD
RIGHT
SE OUT
BTL/SE
SELECT
SHUTDOWN
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SSM2250RUZ-REEL Summary of contents

  • Page 1

    FEATURES Part of SoundMAX® audio solution for desktop computers Mono 1.5 W differential or stereo 250 mW output Single-supply operation: 2 Low shutdown current = 60 μA PC99 compliant Low distortion: 0.2% THD at 1.5 W ...

  • Page 2

    SSM2250 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Pin Configurations ........................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Electrical Characteristics 5.0 V......................................... 3 S REVISION HISTORY 6/05—Rev. 0 ...

  • Page 3

    SPECIFICATIONS ELECTRICAL CHARACTERISTICS 5 2 25°C, unless otherwise noted Table 1. Parameter Symbol DEVICE CHARACTERISTICS Output Offset Voltage V OS Large Signal Voltage Gain A Output Power P ...

  • Page 4

    SSM2250 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Supply Voltage 1 Differential Input Voltage Common-Mode Input Voltage ESD Susceptibility Storage Temperature Range All Packages Operating Temperature Range All Packages Junction Temperature Range All Packages Lead Temperature Range (Soldering, 60 sec) 1 ...

  • Page 5

    TYPICAL PERFORMANCE CHARACTERISTICS BTL MODE R = 8Ω 1μ OUT 0.1 20 100 FREQUENCY (Hz) Figure 4. BTL Out THD + N vs. ...

  • Page 6

    SSM2250 BTL MODE R = 8Ω 1μ 20Hz 0.1 10m 100m OUTPUT POWER (W) Figure 10. BTL Out THD + N vs. Output ...

  • Page 7

    PRODUCT OVERVIEW The SSM2250 is a low distortion power amplifier that can drive a set of stereo headphones or a single 8 Ω loudspeaker. It contains three rail-to-rail output op amps, click-and-pop reduc- tion biasing, and all necessary switching circuitry. ...

  • Page 8

    SSM2250 LEFT IN SHUTDOWN RIGHT IN The output coupling capacitor creates a high-pass filter with a cutoff frequency − π where the resistance of the headphone. L ...

  • Page 9

    0.3 0.25 0.2 0. 8Ω 16Ω 0. 0.1 0.2 OUTPUT POWER (W) Figure 16. Power Dissipation vs. Single-Ended Output Power (V The maximum power dissipation for ...

  • Page 10

    SSM2250 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 1.5 2.0 2.5 3.0 3.5 SUPPLY VOLTAGE (V) Figure 18. Maximum BTL Output Power vs. V Use Figure 18 to find the minimum supply voltage needed to achieve a specified ...

  • Page 11

    10μF 0.1μF 10μ CLK 22pF 1 C11 2 22pF 3 Y1 24.576MHz 4 SMT SDATA 5 OUT 6 BITCLK C20 R8 27pF 47Ω 7 ...

  • Page 12

    ... SSM2250RU-REEL −40°C to +85°C 1 SSM2250RUZ-REEL −40°C to +85° Pb-free part, # denotes Pb-free part; may be top or bottom marked. © 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. ...