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SSM2250RUZ-REEL1 Datasheet

  • SSM2250RUZ-REEL1

  • Mono 1.5 W/Stereo 250 mW Power Amplifier

  • 12頁(yè)

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Mono 1.5 W/Stereo 250 mW
Power Amplifier
SSM2250
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 渭A
PC99 compliant
Low distortion: 0.2% THD at 1.5 W
Wide bandwidth: 4 MHz
Unity-gain stable
PIN CONFIGURATIONS
LEFT IN
1
SHUTDOWN
2
SE/BTL
3
GND
4
RIGHT IN
5
10
LEFT OUT/BTL鈥?/div>
V
DD
SSM2250
9
8
BTL+
TOP VIEW
(Not to Scale)
7
BYPASS
9-001
6
RIGHT OUT
Figure 1. 10-Lead MSOP Pin Configuration
(RM Suffix)
APPLICATIONS
Desktop, portable, and palmtop computers
Sound cards
Communication headsets
2-way communications
Hand-held games
7
8
NC = NO CONNECT
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 惟 bridge-tied load
(BTL) or 2 脳 90 mW into stereo 32 惟 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 渭A shutdown current) makes the SSM2250 an
ideal speaker amplifier for battery-powered applications.
The SSM2250 is specified over the industrial (鈭?0擄C to +85擄C)
temperature range. It is available in a 14-lead TSSOP and a
10-lead, surface mount MSOP package.
Figure 2. 14-Lead TSSOP Pin Configuration
(RU Suffix)
FUNCTIONAL BLOCK DIAGRAM
V
DD
LEFT IN
A1
LEFT SE/
MONO BTL
OUT鈥?/div>
BYPASS CAP
A2
MONO BTL
OUT+
V
DD
RIGHT IN
A3
RIGHT
SE OUT
SWITCHING
CIRCUITRY
V
DD
GND
Figure 3.
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.
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
漏 2005 Analog Devices, Inc. All rights reserved.
00359-003
CLICK AND POP
REDUCTION
BIAS
00359-002
NC
LEFT IN
SHUTDOWN
SE/BTL
+GND
RIGHT IN
NC
1
14
SSM2250
NC
LEFT OUT/BTL
V
DD
BTL+
BYPASS
RIGHT OUT
NC
BTL/SE
SELECT
SHUTDOWN

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