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SSM2250RU Datasheet

  • SSM2250RU

  • Mono 1.5 W/Stereo 250 mW Power Amplifier

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a
FEATURES
Part of SoundMax
廬
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 A
PC 99 Compliant
Low Distortion: 0.2% THD at 1.5 W
Wide Bandwidth: 4 MHz
Unity-Gain Stable
APPLICATIONS
Desktop, Portable or Palmtop Computers
Sound Cards
Communication Headsets
2-Way Communications
Handheld Games
Mono 1.5 W/Stereo 250 mW
Power Amplifier
SSM2250
PIN CONFIGURATIONS
10-Lead MSOP
(RM Suffix)
LEFT IN
SHUTDOWN
SE/BTL
GND
RIGHT IN
1
2
3
4
5
10 LEFT OUT/BTL鈥?/div>
9
V
DD
BTL+
BYPASS
RIGHT OUT
SSM2250
8
7
6
14-Lead TSSOP
(RU Suffix)
NC
LEFT IN
SHUTDOWN
SE/BTL
GND
RIGHT IN
NC
1
14
NC
LEFT OUT/BTL
V
DD
BTL
BYPASS
RIGHT OUT
NC
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 AC鈥?7 Codec it provides a
PC audio system that meets the PC 99 requirements. The SSM2250
is compact and requires a minimum of external components.
The SSM2250 features an audio amplifier capable of delivering
1.5 W of low distortion power into a mono 4
鈩?/div>
bridged-tied load
(BTL) or 2 90 mW into stereo 32
鈩?/div>
single-ended load (SE)
headphones. Both amplifiers provide rail-to-rail outputs for maxi-
mum dynamic range from a single supply. The balanced output
provides maximum output from 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
碌A(chǔ)
shutdown current) makes the SSM2250 an ideal speaker
amplifier for battery-powered applications.
The SSM2250 is specified over the industrial (鈥?0擄C to +85擄C)
temperature range. It is available in 14-lead TSSOP and 10-lead
MSOP surface mount packages.
LEFT IN
SSM2250
7
8
NC = NO CONNECT
V
DD
A1
LEFT SE/
MONO BTL
OUT鈥?/div>
BYPASS
CAP
A2
V
DD
MONO BTL
OUT+
RIGHT IN
A3
RIGHT
SE OUT
SWITCHING
CIRCUITRY
V
DD
GND
CLICK AND POP
REDUCTION
BIAS
BTL/SE
SELECT
SHUT-
DOWN
Figure 1. Functional Block Diagram
SoundMax is a registered trademark of Analog Devices, Inc.
REV. 0
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
漏 Analog Devices, Inc., 1999

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