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| 型号： | MAX4409ETP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO .08W STER AB 20TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 75 |
| 系列： | DirectDrive® |
| 类型： | AB 类 |
| 输出类型： | 耳机，2-通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 80mW x 2 @ 16 欧姆 |
| 电源电压： | 1.8 V ~ 3.6 V |
| 特点： | 消除爆音，短路保护和热保护，关闭 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 20-TQFN-EP（4x4） |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 包装： | 管件 |
| 产品目录页面： | 1390 (CN2011-ZH PDF) |
General Description
The MAX4409 stereo headphone amplifier combines
Maxim’s DirectDrive architecture and a common-
mode sense input, which allows the amplifier to reject
common-mode noise. Conventional headphone ampli-
fiers require a bulky DC-blocking capacitor between
the headphone and the amplifier. DirectDrive produces
a ground-referenced output from a single supply, elimi-
nating the need for large DC-blocking capacitors,
which saves cost, board space, and component height.
The common-mode voltage sensing corrects for any
difference between SGND of the amplifier and the
headphone return. This feature minimizes ground-loop
noise when the HP socket is used as a line out connec-
tion to other grounded equipment, for example, a PC
connected to a home hi-fi system.
The MAX4409 draws only 5mA of supply current, deliv-
ers up to 80mW per channel into a 16
Ω load, and has a
low 0.002% THD+N. A high 86dB power-supply rejec-
tion ratio allows this device to operate from noisy digital
supplies without additional power-supply conditioning.
The MAX4409 includes ±8kV ESD protection on the
headphone outputs. Comprehensive click-and-pop cir-
cuitry eliminates audible clicks and pops on startup
and shutdown. A low-power shutdown mode reduces
supply current draw to only 6A.
The MAX4409 operates from a single 1.8V to 3.6V sup-
ply, has short-circuit and thermal overload protection,
and is specified over the extended -40°C to +85°C tem-
perature range. The MAX4409 is available in a tiny 20-
pin thin QFN (4mm x 4mm x 0.8mm) package.
Applications
Features
No Bulky DC-Blocking Capacitors Required
Ground-Referenced Outputs Eliminate DC-Bias
Voltages on Headphone Ground Pin
Common-Mode Voltage Sensing Eliminates
Ground-Loop Noise
96dB CMRR
No Degradation of Low-Frequency Response Due
to Output Capacitors
80mW per Channel into 16Ω
Low 0.002% THD+N
High 86dB PSRR
Integrated Click-and-Pop Suppression
1.8V to 3.6V Single-Supply Operation
Low Quiescent Current
Low-Power Shutdown Mode
Short-Circuit and Thermal-Overload Protection
±8kV ESD-Protected Amplifier Outputs
Available in a Space-Saving Package
20-Pin Thin QFN (4mm x 4mm x 0.8mm)
MAX4409
80mW, DirectDrive, Stereo Headphone
Amplifier with Common-Mode Sense
________________________________________________________________ Maxim Integrated Products
1
LEFT
AUDIO
INPUT
RIGHT
AUDIO
INPUT
SHDN
COM
MAX4409
DirectDrive OUTPUTS
ELIMINATE DC-BLOCKING
CAPACITORS
COMMON-MODE
SENSE INPUT ELIMINATES
GROUND-LOOP NOISE
Functional Diagram
Ordering Information
19-2842; Rev 3; 6/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com
PART
TEMP RANGE
PIN-PACKAGE
MAX4409ETP
-40°C to +85°C
20 Thin QFN-EP*
Notebooks
Desktop PCs
Cellular Phones
PDAs
MP3 Players
Tablet PCs
Portable Audio Equipment
Pin Configurations and Typical Application Circuit appear
at end of data sheet.
*EP = Exposed pad.
DirectDrive is a registered trademark of Maxim Integrated
Products, Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4409ETP+ | 功能描述:音频放大器 80mW DirectDrive Stereo Headphone Amp 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 |
| MAX4409ETP+T | 功能描述:音频放大器 80mW DirectDrive Stereo Headphone Amp 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 |
| MAX4409ETP-T | 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 |
| MAX4409EUD | 制造商:Maxim Integrated Products 功能描述:80MW, DIRECTDRIVE, STEREO HEADPHONE AMPLIFIER - Bulk |
| MAX4409EUD+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH 2CH STEREO 0.08W CLS-AB 14TSSOP - Rail/Tube |
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