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LX1722 Datasheet, PDF (1/14 Pages) Microsemi Corporation – Class-D Stereo Power Amplifier Controller | |||
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INTEGRATED PRODUCTS
AudioMAXâ¢
LX1721 / 1722
Class-D Stereo Power Amplifier Controller
PRODUCTION
DESCRIPTION
The LX1721/1722 is a monolithic high A complete audio amplifier module is
performance Class-D stereo controller IC available to quickly evaluate the LX1721
designed for high efficiency or space or LX1722 stereo controller. Simply
constrained audio requirements such as connect the amplifier to the power source,
portable or battery operated products, audio signal, and speakers. Reference
automotive amplifiers, and multi-channel designs support a variety of requirements
multimedia computer and video game including multi channel systems,
applications. This high frequency, full subwoofers, satellite / subwoofer com-
audio bandwidth switching power binations and various speaker loads (2â¦,
amplifier controller offers dramatically 4â¦, 8â¦). The versatile amplifier solution
improved performance over Linfinityâs can easily be adjusted for frequency
previous generation amplifier products. response, optimized for efficiency and
Enhancements include higher output performance, or designed to minimize
power, better SNR, lower noise floor, and PCB area and component count. The
reduced THD. Combined with output LX1721/1722 is available in a space
power MOSFETâs and an output filter, the saving 44-pin QSOP package.
LX1721/1722 is a complete Class-D audio (Continued Next Page)
solution.
IMPORTANT: For the most current data, consult MICROSEMIâs website: http://www.microsemi.com
7V - 25V
Channel
1
Channel 2
IN +
IN -
LX1722
Stereo
IN +
IN -
CLOCK
PRODUCT HIGHLIGHT
FETs
Left
Output Power vs. Supply Voltage
1kHz, 4â¦, THD+N=1%
FETs
Right
2â¦, 4â¦, 8â¦
Channel 3
LX1711
Mono
IN +
IN -
FETs
Subwoofer
2.1 Audio Amplifier
Configuration
KEY FEATURES
 Integrated Switching Class-D
Stereo Controller IC
 Full 20Hz-20kHz Audio
Bandwidth
 High Fidelity (LX1721) Or
High Power (LX1722)
Versions Available
 Single Supply Operation
 THD+N <0.06% Typical
(1Wrms, 1kHz, 4â¦)
 Maximum Efficiency 80%-
85%
 Output Power >60Wrms per
Channel (LX1722, 4â¦, 1%
THD+N)
 PSRR â70dB Typical
 Differential Input To Minimize
Noise Effects
 Supports Multi-Channel
Systems
 Complete LXE1721or
LXE1722 Amplifier Evaluation
Module Available
 44-Pin QSOP Package
APPLICATIONS
 Multimedia Speakers
 Surround Sound Game
Systems
 Notebook Computers
 Desktop Computers
 Automotive Amplifiers And
Head units
 Battery Operated Equipment
(Megaphone, Public Address
System)
 Portable Audio (Boom Box)
 Wireless Speakers
 High Power Subwoofer
 Automotive Audio Systems
 Home Theatre
Copyright  2001
Rev. 1.1,2003-06-10
PACKAGE ORDER INFO
TJ (°C)
VDD
Plastic QSOP
DB 44-Pin
-20 to 70
7V â 15V
LX1721CDB
-20 to 70
7V â 25V
LX1722CDB
Note: Available in Tape & Reel.
Append the letter âTâ to the part number. (i.e. LX1722CDBT)
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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