LM4924SD

更新时间： 2024-01-26 03:20:04

品牌	Logo	应用领域
美国国家半导体 - NSC		电池音频放大器
页数	文件大小	规格书
16页	422K
描述
2 Cell Battery, 40mW Per Channel Output Capacitor-Less(OCL) Stereo Headphone Audio Amplifier

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技术参数
数据手册

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LM4924SD 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	SON, SOLCC10,.11,20	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-PDSO-N10	JESD-609代码：	e3
湿度敏感等级：	1	功能数量：	1
端子数量：	10	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：	SON	封装等效代码：	SOLCC10,.11,20
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
电源：	1.8/3 V	认证状态：	Not Qualified
子类别：	Audio/Video Amplifiers	最大压摆率：	1.9 mA
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	端子形式：	NO LEAD
端子节距：	0.5 mm	端子位置：	DUAL
Base Number Matches：	1

LM4924SD 数据手册

October 2004

LM4924

2 Cell Battery, 40mW Per Channel Output Capacitor-Less

(OCL) Stereo Headphone Audio Amplifier

General Description

Key Specifications

n OCL output power

The LM4924 is a Output Capacitor-Less (OCL) stereo head-

phone amplifier, which when connected to a 3.0V supply,

delivers 40mW per channel to a 16Ω load with less than 1%

THD+N.

(R_L= 16Ω, V_DD= 3.0V, THD+N = 1%)

40mW (typ)

0.1µA (typ)

n Micropower shutdown current

n Supply voltage operating range

n PSRR 100Hz, V_DD= 3.0V, A_V= 2.5

1.5V V_DD3.6V

66dB (typ)

With the LM4924 packaged in the MM and SD packages, the

customer benefits include low profile and small size. These

packages minimizes PCB area and maximizes output power.

Features

The LM4924 features circuitry that reduces output transients

(“clicks” and “pops”) during device turn-on and turn-off, and

Mute On and Off. An externally controlled, low-power con-

sumption, active-low shutdown mode is also included in the

LM4924. Boomer audio power amplifiers are designed spe-

cifically to use few external components and provide high

quality output power in a surface mount packages.

n 2-cell 1.5V to 3.6V battery operation

n OCL mode for stereo headphone operation

n Unity-gain stable

n “Click and pop” suppression circuitry for shutdown On

and Off transients

n Active low micropower shutdown

n Thermal shutdown protection circuitry

Applications

n Portable two-cell audio products

n Portable two-cell electronic devices

Typical Application

20121057

FIGURE 1. Block Diagram

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

DS201210

www.national.com

12 3 4 5 6 7...16

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