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| 型号： | MAX9708ETN+TD |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/22页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO PWR 42W STER 56TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | D 类 |
| 输出类型： | 1-通道（单声道）或 2-通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 42W x 1 @ 4 欧姆; 21W x 2 @ 8 欧姆 |
| 电源电压： | 10 V ~ 18 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： | 56-TQFN-EP（8x8） |
| 封装/外壳： | 56-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
19-3678; Rev 3; 4/13
MAX9708
20W/40W, Filterless, Spread-Spectrum,
Mono/Stereo, Class D Amplifier
EVALUATION KIT AVAILABLE
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
General Description
The MAX9708 mono/stereo, Class D audio power amplifi-
er delivers up to 2 x 21W into an 8
Ω stereo mode and
1 x 42W into a 4
Ω load in mono mode while offering up to
87% efficiency. The MAX9708 provides Class AB amplifi-
er performance with the benefits of Class D efficiency,
eliminating the need for a bulky heatsink and conserving
power. The MAX9708 operates from a single +10V to
+18V supply, driving the load in a BTL configuration.
The MAX9708 offers two modulation schemes: a fixed-
frequency modulation (FFM) mode, and a spread-spec-
trum
modulation
(SSM)
mode
that
reduces
EMI-radiated emissions. The MAX9708 can be synchro-
nized to an external clock from 600kHz to 1.2MHz. A
synchronized output allows multiple units to be cascad-
ed in the system.
Features include fully differential inputs, comprehensive
click-and-pop suppression, and four selectable-gain set-
tings (22dB, 25dB, 29.5dB, and 36dB). A pin-program-
mable thermal flag provides seven different thermal
warning thresholds. Short-circuit and thermal-overload
protection prevent the device from being damaged
during a fault condition.
The MAX9708 is available in a 56-pin TQFN (8mm x
8mm x 0.8mm) package and is specified over the
extended -40°C to +85°C temperature range.
Applications
LCD TVs
PDP TVs
Automotive
PC/HiFi Audio Solutions
Features
o 2 x 21W Output Power in Stereo Mode
(8
Ω, THD = 10%)
o 1 x 42W Output Power in Mono Mode
(4
Ω, THD = 10%)
o High Efficiency: Up to 87%
o Filterless Class D Amplifier
o Unique Spread-Spectrum Mode
o Programmable Gain (+22dB, +25dB, +29.5dB,
+36dB)
o High PSRR (90dB at 1kHz)
o Differential Inputs Suppress Common-Mode
Noise
o Shutdown and Mute Control
o Integrated Click-and-Pop Suppression
o Low 0.1% THD+N
o Current Limit and Thermal Protection
o Programmable Thermal Flag
o SYNC Input/Output
o Available in Thermally Efficient, Space-Saving
56-Pin TQFN Package
CLASS D
MODULATOR
SYNCOUT
TEMP
OUTPUT
PROTECTION
GAIN
CONTROL
FS1, FS2
MAX9708
STEREO MODE
G1, G2
2
SYNC
RIGHT
CHANNEL
LEFT
CHANNEL
MONO
2
TH0, TH1,
TH2
3
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX9708ETN+
-40°C to +85°C
56 TQFN-EP*
T5688-3
MAX9708ETN/V+ -40°C to +85°C
56 TQFN-EP*
T5688-3
Simplified Block Diagram
Ordering Information
+
Denotes lead-free package.
/V denotes an automotive qualified part.
*
EP = Exposed pad.
Pin Configurations appear at end of data sheet.
CLASS D
MODULATOR
SYNCOUT
TEMP
OUTPUT
PROTECTION
GAIN
CONTROL
FS1, FS2
MAX9708
MONO MODE
G1, G2
2
SYNC
AUDIO
INPUT
VDIGITAL
MONO
2
TH0, TH1,
TH2
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9708EVKIT | 功能描述:音频放大器 Evaluation Kit for the MAX9708 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 |
| MAX9709ECB+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 1CH MONO/2CH STEREO 50W/29W CLS-D 64TQFP EP - Rail/Tube |
| MAX9709ECB+T | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 1CH MONO/2CH STEREO 50W/29W CLS-D 64TQFP EP - Tape and Reel |
| MAX9709ETN | 功能描述:音频放大器 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 |
| MAX9709ETN+ | 功能描述:音频放大器 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 |
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