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| 型号： | LM4855IBL/NOPB |
| 厂商： | National Semiconductor |
| 文件页数： | 1/27页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO PWR 1.5W AB 18USMD |
| 标准包装： | 1 |
| 系列： | Boomer® |
| 类型： | AB 类 |
| 输出类型： | 1-通道（单声道），带立体声耳机 |
| 在某负载时最大输出功率 x 通道数量： | 1.5W x 1 @ 4 欧姆; 115mW x 2 @ 32 欧姆 |
| 电源电压： | 2.6 V ~ 5 V |
| 特点： | 消除爆音，静音，关机，SPI，热保护，音量控制 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 18-uSMD |
| 封装/外壳： | 18-VFBGA |
| 包装： | 标准包装 |
| 其它名称： | LM4855IBLDKR |
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SNAS164C – JUNE 2002 – REVISED MAY 2013
LM4855
Integrated Audio Amplifier System
Check for Samples: LM4855
1
FEATURES
DESCRIPTION
The LM4855 is an audio power amplifier system
2
1.1W (Typ) Output Power with 8
Mono BTL
capable of delivering 1.1W (typ) of continuous
Load
average power into a mono 8
bridged-tied load
115mW (Typ) Output Power with Stereo 32
(BTL) with 1% THD+N and 115mW (typ) per channel
BTL Loads
of continuous average power into stereo 32
BTL
loads with 0.5% THD+N, using a 5V power supply.
SPI Programmable 32 Step Digital Volume
Control
The LM4855 features a 32 step digital volume control
Eight Distinct Output Modes
and eight distinct output modes. The digital volume
control and output modes are programmed through a
DSBGA and WQFN Surface Mount Packaging
three-wire SPI serial control interface, that allows
"Click and Pop" Suppression Circuitry
flexibility in routing and mixing audio channels.
Thermal Shutdown Protection
The LM4855 is designed for cellular phone, PDA, and
Low Shutdown Current (0.1uA, Typ)
other portable handheld applications. It delivers high
quality output power from a surface-mount package
KEY SPECIFICATIONS
and requires only six external components.
THD+N at 1kHz, 1.1W into 8
Ω BTL: 1.0% (Typ)
The industry leading DSBGA package only utilizes
2mm x 2.3mm of PCB space, making the LM4855 the
THD+N at 1kHz, 115mW into 32
Ω BTL: 0.5%
most space efficient audio sub system available
(Typ)
today.
Single Supply Operation: 2.6 to 5.0V
APPLICATIONS
Moblie Phones
PDAs
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright 2002–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4855ITL | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:IC AMP AUDIO 1W MONO SMD 4855 |
| LM4855ITL/NOPB | 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 |
| LM4855ITLX | 制造商:Texas Instruments 功能描述:Audio Amp Headphone/Speaker 1-CH Mono/2-CH Stereo 1.1W Class-AB 18-Pin uSMD T/R |
| LM4855ITLX/NOPB | 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 |
| LM4855LQ | 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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