lx1722 Microsemi Corporation, lx1722 Datasheet

no-image

lx1722

Manufacturer Part Number
lx1722
Description
Class-d Stereo Power Amplifier Controller
Manufacturer
Microsemi Corporation
Datasheet
Copyright © 2001
Rev. 1.2a,2004-06-10
performance Class-D stereo controller IC
designed for high efficiency or space
constrained audio requirements such as
portable or battery operated products,
automotive amplifiers, and multi-channel
multimedia computer and video game
applications.
audio
amplifier controller offers dramatically
improved performance over Linfinity’s
previous generation amplifier products.
Enhancements
power, better SNR, lower noise floor, and
reduced THD.
power MOSFET’s and an output filter, the
LX1721/1722 is a complete Class-D audio
solution.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
The LX1721/1722 is a monolithic high
Channel 2
Channel 3
Channel
1
bandwidth
2.1 Audio Amplifier
I N T E G R A T E D
IN -
IN +
IN -
IN +
IN -
IN +
LX1722
LX1711
Configuration
Stereo
7V - 25V
Mono
CLOCK
This high frequency, full
include
Combined with output
FETs
FETs
FETs
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
switching
P R O D U C T H I G H L I G H T
Subwoofer
higher
2Ω, 4Ω, 8Ω
D E S C R I P T I O N
Left
Right
P R O D U C T S
output
power
-20 to 70
-20 to 70
T
J
Append the letters “TR” to the part number. (i.e. LX1722CDBTR)
(°C)
available to quickly evaluate the LX1721
or LX1722 stereo controller.
connect the amplifier to the power source,
audio signal, and speakers.
designs support a variety of requirements
including
subwoofers, satellite / subwoofer com-
binations and various speaker loads (2Ω,
4Ω, 8Ω). The versatile amplifier solution
can easily be adjusted for frequency
response, optimized for efficiency and
performance, or designed to minimize
PCB area and component count.
LX1721/1722 is available in a space
saving 44-pin QSOP package.
(Continued Next Page)
Output Power vs. Supply Voltage
Linfinity Microelectronics Division
A complete audio amplifier module is
P A C K A G E O R D E R I N F O
1kHz, 4Ω, THD+N=1%
Microsemi
Note: Available in Tape & Reel.
multi
7V – 15V
7V – 25V
V
Class-D Stereo Power Amplifier Controller
DD
channel
AudioMAX™
DB
Reference
systems,
Simply
LX1721CDB
LX1722CDB
The
Plastic QSOP
44-Pin
P
RODUCTION
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, 4Ω)
Maximum Efficiency 80%-
85%
Output Power >60Wrms per
Channel (LX1722, 4Ω, 1%
THD+N)
PSRR –70dB Typical
Differential Input To Minimize
Noise Effects
Supports Multi-Channel
Systems
Complete LXE1721or
LXE1722 Amplifier Evaluation
Module Available
44-Pin QSOP Package
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
K E Y F E A T U R E S
A P P L I C A T I O N S
LX1721 / 1722
Page 1

Related parts for lx1722

Related keywords