參數(shù)資料
型號(hào)： LM4857SP
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 消費(fèi)家電
英文描述： Stereo 1.2W Audio Sub-system with 3D Enhancement
中文描述： SPECIALTY CONSUMER CIRCUIT, QCC28
封裝： LLP-28
文件頁(yè)數(shù)： 1/38頁(yè)
文件大?。?/td> 1517K
代理商： LM4857SP
LM4857
Stereo 1.2W Audio Sub-system with 3D Enhancement
General Description
The LM4857 is an integrated audio sub-system designed for
stereo cell phone applications. Operating on a 3.3V supply, it
combines a stereo speaker amplifier delivering 495mW per
channel into an 8
load, a stereo headphone amplifier de-
livering 33mW per channel into a 32
load, a mono earpiece
amplifier delivering 43mW into a 32
load, and a line output
for an external powered handsfree speaker. It integrates the
audio amplifiers, volume control, mixer, power management
control, and National 3D enhancement all into a single pack-
age. In addition, the LM4857 routes and mixes the stereo
and mono inputs into 16 distinct output modes. The LM4857
is controlled through an I
2
C compatible interface. Other fea-
tures include an ultra-low current shutdown mode and ther-
mal shutdown protection.
Boomer audio power amplifiers are designed specifically to
provide high quality output power with a minimal amount of
external components.
The LM4857 is available in a 30-bump ITL package and a
28–lead LLP package.
Key Specifications
j
P
OUT
, Stereo Loudspeakers, 4
, 5V,
1% THD+N (LM4857SP)
j
P
OUT
, Stereo Loudspeakers, 8
, 5V,
1% THD+N
j
P
OUT
, Stereo Headphones, 32
, 5V,
1% THD+N
j
P
OUT
, Mono Earpiece, 32
, 5V,
1% THD+N
j
P
OUT
, Stereo Loudspeakers, 8
, 3.3V,
1% THD+N
j
P
OUT
, Stereo Headphones, 32
, 3.3V,
1% THD+N
j
P
OUT
, Mono Earpiece, 32
, 3.3V,
1% THD+N
j
Shutdown Current
1.6W (typ)
1.2W (typ)
75mW (typ)
100mW (typ)
495mW (typ)
33mW (typ)
43mW (typ)
0.06μA (typ)
Features
n
Stereo speaker amplifier
n
Stereo headphone amplifier
n
Mono earpiece amplifier
n
Mono Line Output for external handsfree carkit
n
Independent Left, Right, and Mono volume controls
n
National 3D enhancement
n
I
2
C compatible interface
n
Ultra low shutdown current
n
Click and Pop Suppression circuit
n
16 distinct output modes
n
Thermal Shutdown Protection
n
Available in micro SMD and LLP packages
Applications
n
Cell Phones
n
PDAs
n
Portable Gaming Devices
n
Internet Appliances
n
Portable DVD/CD/AAC/MP3 players
Boomer
is a registered trademark of National Semiconductor Corporation.
June 2004
L
2004 National Semiconductor Corporation
DS200797
www.national.com
相關(guān)PDF資料
PDF描述
LM4859 Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:47; Connector Shell Size:40; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight
LM4870 1.1W Audio Power Amplifier with Shutdown Mode
LM4870M 1.1W Audio Power Amplifier with Shutdown Mode
LM4871 1.1W Audio Power Amplifier with Shutdown Mode
LM4871N 1.1W Audio Power Amplifier with Shutdown Mode
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4857SP/NOPB 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
LM4857SPBD 功能描述:BOARD EVALUATION LM4857SP RoHS:否 類別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:-
LM4858 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Mono 1.5 W / Stereo 300mW Power Amplifier
LM48580 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High Efficiency Class H, High Voltage, Haptic Piezo Actuator / Ceramic Speaker Driver
LM48580TL 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High Efficiency Class H, High Voltage, Haptic Piezo Actuator / Ceramic Speaker Driver
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*