Datasheet > 消费电路 > 音频/视频放大器> LM4931ITLX/NOPB

LM4931ITLX/NOPB

更新时间： 2024-02-29 07:55:38

品牌	Logo	应用领域
美国国家半导体 - NSC		放大器
页数	文件大小	规格书
47页	1631K
描述
IC,AUDIO AMPLIFIER,SINGLE,BGA,42PIN,PLASTIC

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技术参数
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LM4931ITLX/NOPB 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	FBGA, BGA42,6X7,20	Reach Compliance Code：	compliant
风险等级：	5.84	商用集成电路类型：	AUDIO AMPLIFIER
JESD-30 代码：	R-PBGA-B42	JESD-609代码：	e1
湿度敏感等级：	1	功能数量：	1
端子数量：	42	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	FBGA	封装等效代码：	BGA42,6X7,20
封装形状：	RECTANGULAR	封装形式：	GRID ARRAY, FINE PITCH
电源：	3/3.3,3/5 V	认证状态：	Not Qualified
子类别：	Audio/Video Amplifiers	表面贴装：	YES
温度等级：	INDUSTRIAL	端子面层：	Tin/Silver/Copper (Sn/Ag/Cu)
端子形式：	BALL	端子节距：	0.5 mm
端子位置：	BOTTOM	Base Number Matches：	1

LM4931ITLX/NOPB 数据手册

June 2004

LM4931

Audio Subsystem with Mono High Efficiency

Loudspeaker and Stereo Headphone Amplifiers

General Description

Key Specifications

The LM4931 is an integrated audio subsystem that supports

voice and digital audio functions. The LM4931 includes a

high quality stereo DAC, voice band codec, a stereo head-

phone amplifier and a high-power high efficiency mono

speaker amplifier. It is primarily designed for demanding

applications in mobile phones and other portable devices.

P_{LS OUT}at AV_DD= 5V, 8Ω

1% THD+N

1.1W (typ)

P_{LS OUT}at AV_DD= 3.3V, 8Ω

1% THD+N

570mW (typ)

P_{H/P OUT}at AV_DD= 5V & AV_DD= 3.3V, 32Ω

The LM4931 features an I²S serial interface for full range

audio, a 16-bit PCM bi-directional serial interface for the

voice band codec and an I²C/SPI compatible interface for

control. The full range music path features an SNR of 86dB

with an 18-bit 48kHz input. The headphone amplifier delivers

at least 26mW_RMSto a 32Ω single-ended stereo load with

less than 1% distortion (THD+N) when AV_DD= 3.3V_DC. The

mono speaker amplifier delivers up to 570mW_RMSinto an 8Ω

1% THD+N

26mW (typ)

Supply voltage range

DV_DD

2.7V to 4.0V

2.7V to 5.0V

1.1µA (typ)

62dB (typ)

75dB (typ)

86dB (typ)

AV_DD(Note 8)

Shutdown current

PSRR at 217Hz, AV_DD= 3V

SNR (Voice Codec)

SNR (Audio DAC)

load with less than 1% distortion when AV_DD= 3.3V_DC

The LM4931 employs advanced techniques to reduce power

consumption, to reduce controller overhead, and to eliminate

click and pop. Boomer audio power amplifiers were de-

signed specifically to provide high quality output power with

a minimal amount of external components. It is therefore

ideally suited for mobile phone and other low voltage appli-

cations where minimal power consumption, PCB area, and

cost are primary requirements.

Features

n 18-bit 44.1kHz or 48kHz stereo DAC

n 16-bit 8kHz , 12kHz , 16kHz, or 24kHz voice-band

codec

n PLL for operation from common system clocks

n Either I²C or SPI compatible serial interface

n I²S digital audio data serial interface

n PCM voice audio data serial interface

n Differential analog microphone input

n 26mW/channel stereo headphone amplifier

n 570mW mono high efficiency BTL 8Ω amplifier

n 32-step volume control for audio output amplifiers with

1.5dB step size.

n Unity-gain stable headphone amplifiers

n No snubber networks or bootstrap capacitors are

required by the headphone or hands-free amplifiers

n Adjustable digital side-tone attenuation

n 16-step volume control for microphone preamp with 2dB

step size

n Configurable GPIO/Status Port

n Available in the 42 bump micro-SMD package

Applications

n 2.5 and 3G Mobile Phones and Multimedia Terminals

n PDAs, Internet Appliances and Portable Gaming

n Portable DVD/CD/AAC/MP3 Players

n Digital Cameras and Toys

Boomer^®is a registered trademark of National Semiconductor Corporation.

DS201009

www.national.com

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与LM4931ITLX/NOPB相关器件

型号	品牌	描述	获取价格	数据表
LM49321	NSC	Audio Sub-System with Stereo DAC, Mono Class AB Loudspeaker Amplifier, OCL/SE Stereo Headp	获取价格
LM49321RL	NSC	Audio Sub-System with Stereo DAC, Mono Class AB Loudspeaker Amplifier, OCL/SE Stereo Headp	获取价格
LM49321RLX/NOPB	TI	Audio Sub-Sys w/ Stereo DAC Mono Class AB Loudspkr Amp OCL/SE Stereo Headph Output &am	获取价格
LM4934	NSC	3D Audio Sub-System with Stereo Speaker, OCL/SE Stereo Headphone, Earpiece and Mono Line L	获取价格
LM4934_06	NSC	3D Audio Sub-System with Stereo Speaker, OCL/SE Stereo Headphone, Earpiece and Mono Line L	获取价格
LM4934RL	NSC	IC SPECIALTY CONSUMER CIRCUIT, PBGA42, MICRO, BGA-42, Consumer IC:Other	获取价格

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