參數(shù)資料
型號(hào)： LX1721
廠商： Microsemi Corporation
英文描述： Class-D Stereo Power Amplifier Controller
中文描述： D類立體聲功率放大器控制器
文件頁數(shù)： 1/14頁
文件大?。?/td> 367K
代理商： LX1721
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
2001
Rev. 1.1,2003-06-10
W
M
.
C
AudioMAX
LX1721 / 1722
Class-D Stereo Power Amplifier Controller
P
RODUCTION
I N T E G R A T E D P R O D U C T S
D E S C R I P T I O N
The LX1721/1722 is a monolithic high
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. This high frequency, full
audio
bandwidth
amplifier controller offers dramatically
improved performance over Linfinity’s
previous generation amplifier products.
Enhancements include higher output
power, better SNR, lower noise floor, and
reduced THD. Combined with output
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
switching
power
A complete audio amplifier module is
available to quickly evaluate the LX1721
or LX1722 stereo controller. Simply
connect the amplifier to the power source,
audio signal, and speakers. Reference
designs support a variety of requirements
including
multi
subwoofers, satellite / subwoofer com-
binations and various speaker loads (2
,
4
, 8
). 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. The
LX1721/1722 is available in a space
saving 44-pin QSOP package.
(Continued Next Page)
channel
systems,
P R O D U C T H I G H L I G H T
LX1722
Stereo
FETs
FETs
LX1711
Mono
IN +
IN -
FETs
IN +
IN -
IN +
IN -
CLOCK
Left
Right
Subwoofer
2
, 4
, 8
Channel
1
Channel 2
Channel 3
7V - 25V
2.1 Audio Amplifier
Configuration
Output Power vs. Supply Voltage
1kHz, 4
, THD+N=1%
K E Y F E A T U R E S
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, 4
)
Maximum Efficiency 80%-
85%
Output Power >60Wrms per
Channel (LX1722, 4
, 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
A P P L I C A T I O N S
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
P A C K A G E O R D E R I N F O
T
J
(
°
C)
V
DD
DB
Plastic QSOP
44-Pin
LX1721CDB
LX1722CDB
-20 to 70
-20 to 70
7V – 15V
7V – 25V
Note: Available in Tape & Reel.
Append the letter “T” to the part number. (i.e. LX1722CDBT)
L
X
1
7
2
1
2
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LX1721_04 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Class-D Stereo Power Amplifier Controller
LX1721-01 EVAL KIT 功能描述:KIT EVAL AMP STEREO CLASS D RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 音頻放大器 系列:AudioMAX 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:-
LX1721CDB 功能描述:IC AMP AUDIO PWR 10W STER 44QSOP RoHS:否 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:AudioMAX™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR)
LX1721CDBTR 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Class-D Stereo Power Amplifier Controller
LX1721EVALKIT 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AudioMAX Products
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