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MAX9742ETX PDF预览

MAX9742ETX

更新时间: 2024-10-28 12:32:23
品牌 Logo 应用领域
美信 - MAXIM 放大器
页数 文件大小 规格书
36页 766K
描述
Single-/Dual-Supply, Stereo 16W, Class D Amplifier with Differential Inputs

MAX9742ETX 数据手册

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19-0731; Rev 0; 1/07  
Single-/Dual-Supply, Stereo 16W,  
Class D Amplifier with Differential Inputs  
MAX9742  
General Description  
Features  
2 x 16W Output Power (R = 4, THD+N = 10%)  
The MAX9742 stereo Class D audio power amplifier  
delivers up to 2 x 16W into 4loads. The MAX9742  
features high-power efficiency (92% with 8loads),  
eliminating the need for a bulky heatsink and conserv-  
ing power. The MAX9742 operates from a 20V to 40V  
single supply or a 10V to 20V dual supply. ꢀeatures  
include fully differential inputs, comprehensive click-  
and-pop suppression, low-power shutdown mode, and  
an externally adjustable gain. Short-circuit and thermal-  
overload protection prevent the device from being  
damaged during a fault condition.  
L
High Efficiency: Up to 92% with R = 8Ω  
L
Mute and Shutdown Modes  
Differential Inputs Suppress Common-Mode Noise  
Adjustable Gain  
Integrated Click-and-Pop Suppression  
Low 0.06% THD+N at 3.5W, R = 8Ω  
L
Output Short-Circuit and Thermal Protection  
Available in Space-Saving, 6mm x 6mm, 36-Pin  
TQFN Package  
The MAX9742 is available in a thermally efficient 36-pin  
TQꢀN (6mm x 6mm x 0.8mm) package and is specified  
over the -40°C to +85°C extended temperature range.  
Ordering Information  
PKG  
CODE  
PART  
TEMP RANGE PIN-PACKAGE  
Applications  
MAX9742ETX+ -40°C to +85°C 36 TQꢀN-EP*  
+Denotes lead-free package.  
T3666-3  
CRT TVs  
ꢀlat-Panel Display TVs  
Audio Docking Stations  
Multimedia Monitors  
*EP = Exposed paddle.  
Pin Configuration located at end of data sheet.  
Simplified Block Diagrams  
R
F1  
SINGLE-SUPPLY CONFIGURATION  
C
FBL  
20V TO 40V  
FBL  
V
DD  
C
C
IN  
R
R
IN1  
INL-  
INL+  
LEFT NEGATIVE  
AUDIO INPUT  
MAX9742  
C
OUT  
IN  
L
F
IN2  
CLASS D  
MODULATOR AND  
HALF-BRIDGE  
OUTL  
LEFT POSITIVE  
AUDIO INPUT  
R
ZBL  
C
C
R
R
FBL  
F2  
C
F
V
DD  
MID  
C
ZBL  
2
F2  
FBR  
C
OUT  
L
F
CLASS D  
MODULATOR AND  
HALF-BRIDGE  
OUTR  
C
C
IN  
R
IN2  
INR+  
INR-  
RIGHT POSITIVE  
AUDIO INPUT  
R
ZBL  
IN  
R
IN1  
C
F
RIGHT NEGATIVE  
AUDIO INPUT  
CONTROL LOGIC/  
POWER-UP  
C
ZBL  
SEQUENCING  
FBR  
SFT  
V
SHDN  
SS  
C
FBR  
C
SFT  
ON  
OFF  
R
F1  
Simplified Block Diagrams continued at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  

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