参数资料
型号: MAX9742ETX+
厂商: Maxim Integrated Products
文件页数: 1/36页
文件大小: 0K
描述: IC AMP AUDIO PWR 20.5W D 36TQFN
标准包装: 50
类型: D 类
输出类型: 2 通道(立体声)
在某负载时最大输出功率 x 通道数量: 20.5W x 2 @ 8 欧姆
电源电压: 20 V ~ 40 V,±10 V ~ 20 V
特点: 消除爆音,差分输入,静音,短路和热保护,关机
安装类型: 表面贴装
供应商设备封装: 36-TQFN 裸露焊盘(6x6)
封装/外壳: 36-WFQFN 裸露焊盘
包装: 管件
General Description
The MAX9742 stereo Class D audio power amplifier
delivers up to 2 x 16W into 4 loads. The MAX9742
features high-power efficiency (92% with 8 loads),
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. Features
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.
The MAX9742 is available in a thermally efficient 36-pin
TQFN (6mm x 6mm x 0.8mm) package and is specified
over the -40°C to +85°C extended temperature range.
Applications
CRT TVs
Flat-Panel Display TVs
Audio Docking Stations
Multimedia Monitors
Features
o 2 x 16W Output Power (RL = 4, THD+N = 10%)
o High Efficiency: Up to 92% with RL = 8
o Mute and Shutdown Modes
o Differential Inputs Suppress Common-Mode Noise
o Adjustable Gain
o Integrated Click-and-Pop Suppression
o Low 0.06% THD+N at 3.5W, RL = 8
o Output Short-Circuit and Thermal Protection
o Available in Space-Saving, 6mm x 6mm, 36-Pin
TQFN Package
MAX9742
Single-/Dual-Supply, Stereo 16W,
Class D Amplifier with Differential Inputs
________________________________________________________________
Maxim Integrated Products
1
LF
CF
CLASS D
MODULATOR AND
HALF-BRIDGE
RF2
CFBR
CZBL
RZBL
CIN
RIN1
MAX9742
CIN
RIN2
INL-
INL+
CIN
RIN2
CIN
RIN1
INR+
MID
INR-
CFBL
FBL
FBR
SFT
COUT
CFBL
CFBR
CLASS D
MODULATOR AND
HALF-BRIDGE
CONTROL LOGIC/
POWER-UP
SEQUENCING
LF
CF
CZBL
RZBL
COUT
RF1
SHDN
OUTR
LEFT POSITIVE
AUDIO INPUT
LEFT NEGATIVE
AUDIO INPUT
RIGHT POSITIVE
AUDIO INPUT
RIGHT NEGATIVE
AUDIO INPUT
SINGLE-SUPPLY CONFIGURATION
OUTL
20V TO 40V
VSS
VDD
2
CSFT
ON
OFF
Simplified Block Diagrams
19-0731; Rev 0; 1/07
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.
EVALUATION
KIT
AVAILABLE
Pin Configuration located at end of data sheet.
Ordering Information
+
Denotes lead-free package.
*
EP = Exposed paddle.
PART
TEMP RANGE
PIN-PACKAGE
PKG
CODE
MAX9742ETX+
-40°C to +85°C
36 TQFN-EP*
T3666-3
Simplified Block Diagrams continued at end of data sheet.
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MAX9742ETX+ 功能描述:音频放大器 Stereo 16W Class D Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel
MAX9742ETX+T 功能描述:音频放大器 Stereo 16W Class D Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel
MAX9742EVKIT+ 功能描述:音频放大器 Evaluation Kit for the MAX9742 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel
MAX9744ETH+ 功能描述:音频放大器 Stereo 20W Class D Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel
MAX9744ETH+T 功能描述:音频放大器 Stereo 20W Class D Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel