Datasheet > LM4857ITL

LM4857ITL

更新时间： 2024-11-10 22:22:51

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
38页	1511K
描述
Stereo 1.2W Audio Sub-system with 3D Enhancement

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LM4857ITL 数据手册

June 2004

LM4857

Stereo 1.2W Audio Sub-system with 3D Enhancement

General Description

Key Specifications

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 8Ω load, a stereo headphone amplifier de-

livering 33mW per channel into a 32Ω load, a mono earpiece

amplifier delivering 43mW into a 32Ω 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 I²C compatible interface. Other fea-

tures include an ultra-low current shutdown mode and ther-

mal shutdown protection.

P_OUT, Stereo Loudspeakers, 4Ω, 5V,

1% THD+N (LM4857SP)

1.6W (typ)

1.2W (typ)

P_OUT, Stereo Loudspeakers, 8Ω, 5V,

1% THD+N

P_OUT, Stereo Headphones, 32Ω, 5V,

1% THD+N

75mW (typ)

100mW (typ)

495mW (typ)

33mW (typ)

P_OUT, Mono Earpiece, 32Ω, 5V,

1% THD+N

P_OUT, Stereo Loudspeakers, 8Ω, 3.3V,

1% THD+N

P_OUT, Stereo Headphones, 32Ω, 3.3V,

1% THD+N

Boomer audio power amplifiers are designed specifically to

provide high quality output power with a minimal amount of

external components.

P_OUT, Mono Earpiece, 32Ω, 3.3V,

1% THD+N

43mW (typ)

0.06µA (typ)

The LM4857 is available in a 30-bump ITL package and a

28–lead LLP package.

Shutdown Current

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 I²C 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.

DS200797

www.national.com

12 3 4 5 6 7...38

中文翻译

下载PDF

与LM4857ITL相关器件

型号	品牌	获取价格	描述	数据表
LM4857ITL/NOPB	NSC	获取价格	IC SPECIALTY CONSUMER CIRCUIT, PBGA30, MICRO SMD-30, Consumer IC:Other
LM4857ITL/NOPB	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, PBGA30, MICRO SMD-30
LM4857SP	NSC	获取价格	Stereo 1.2W Audio Sub-system with 3D Enhancement
LM4857SP/NOPB	NSC	获取价格	IC SPECIALTY CONSUMER CIRCUIT, QCC28, LLP-28, Consumer IC:Other
LM4858	NSC	获取价格	Mono 1.5 W / Stereo 300mW Power Amplifier
LM48580	TI	获取价格	LM48580 Boomerâ¢ Audio Power Amplifier Serie
LM48580	NSC	获取价格	High Efficiency Class H, High Voltage, Haptic Piezo Actuator / Ceramic Speaker Driver
LM48580_14	TI	获取价格	High Efficiency Class H, High Voltage, Haptic Piezo Actuator
LM48580TL	NSC	获取价格	High Efficiency Class H, High Voltage, Haptic Piezo Actuator / Ceramic Speaker Driver
LM48580TL/NOPB	TI	获取价格	High Efficiency Class H, High Voltage, Haptic Piezo Actuator / Ceramic Speaker Driver 12-D

与LM4857ITL相关文章

国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

23
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

7
AMD宣布全球裁员约1000人，调整战略聚焦增长
2024-11-14

8
英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

31

产品中心

服务支持

精选活动

关于我们

帮助中心

LM4857ITL

LM4857ITL 数据手册

与LM4857ITL相关器件

与LM4857ITL相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LM4857ITL

LM4857ITL 数据手册

与LM4857ITL相关器件

与LM4857ITL相关文章

您还可以找

您在本页遇到什么问题？