Datasheet > LM4923_07

LM4923_07

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
美国国家半导体 - NSC		放大器功率放大器
页数	文件大小	规格书
14页	389K
描述
1.1 Watt Fully Differential Audio Power Amplifier With Shutdown Select

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LM4923_07 数据手册

December 17, 2007

LM4923ꢀ

1.1 Watt Fully Differential Audio Power Amplifier With

Shutdown Select

General Description

Key Specifications

The LM4923 is a fully differential audio power amplifier pri-

marily designed for demanding applications in mobile phones

and other portable communication device applications. It is

capable of delivering 1.1 watt of continuous average power to

an 8Ω BTL load with less than 1% distortion (THD+N) from a

5V_DCpower supply.

■ꢀImproved PSRR at 217Hz

85dB(typ)

1.1W(typ)

■ꢀPower Output at 5.0V

@ 1% THD+N

■ꢀPower Output at 3.3V

@ 1% THD+N

400mW(typ)

0.1µA(typ)

Boomer audio power amplifiers were designed specifically to

provide high quality output power with a minimal amount of

external components. The LM4923 does not require output

coupling capacitors or bootstrap capacitors, and therefore is

ideally suited for mobile phone and other low voltage appli-

cations where minimal power consumption is a primary re-

quirement.

■ꢀShutdown Current

Features

Fully differential amplification

■

Available in space-saving LLP package

Ultra low current shutdown mode

The LM4923 features a low-power consumption shutdown

mode. To facilitate this, Shutdown may be enabled by logic

low. Additionally, the LM4923 features an internal thermal

shutdown protection mechanism.

Can drive capacitive loads up to 100pF

Improved pop & click circuitry eliminates noises during

turn-on and turn-off transitions

■

The LM4923 contains advanced pop & click circuitry which

eliminates noises which would otherwise occur during turn-on

and turn-off transitions.

2.4 - 5.5V operation

■

No output coupling capacitors, snubber networks or

bootstrap capacitors required

Applications

Mobile phones

■

PDAs

Portable electronic devices

Connection Diagrams

LQ Package

8 Pin LQ Marking

8 Pin MSOP Package

20071302

200713a1

X − Date Code

Top View

TT − Die Traceability

G − Boomer

See Order Number LM4923MM

See NS Package Number MUA08A

20071330

B2 − LM4923LQ

Top View

Order Number LM4923LQ

See NS Package Number LQB08A

Boomer® is a registered trademark of National Semiconductor Corporation.

200713

www.national.com

12 3 4 5 6 7...14

下载PDF

与LM4923_07相关器件

型号	品牌	描述	获取价格	数据表
LM4923LQ	NSC	1.1 Watt Fully Differential Audio Power Amplifier With Shutdown Select	获取价格
LM4923MM	NSC	IC 1.1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8, MSOP-8, Audio/Video Amplifier	获取价格
LM4923MMX/NOPB	TI	1.1W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8, PLASTIC, VSSOP-8	获取价格
LM4924	NSC	2 Cell Battery, 40mW Per Channel Output Capacitor-Less(OCL) Stereo Headphone Audio Amplifi	获取价格
LM4924MM	NSC	2 Cell Battery, 40mW Per Channel Output Capacitor-Less(OCL) Stereo Headphone Audio Amplifi	获取价格
LM4924MM/NOPB	NSC	IC 0.04 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10, MSOP-10, Audio/Video Amplifier	获取价格