Datasheet > LM4832MTX

LM4832MTX

更新时间： 2024-01-01 01:25:43

品牌	Logo	应用领域
美国国家半导体 - NSC		放大器光电二极管商用集成电路
页数	文件大小	规格书
23页	563K
描述
IC 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28, TSSOP-28, Audio Control IC

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LM4832MTX 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	TSSOP, TSSOP28,.25	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.72	其他特性：	MICROPHONE PREAMPLIFIER STAGE IS ALSO AVAILABLE
信道分离：	90 dB	商用集成电路类型：	TONE CONTROL CIRCUIT
JESD-30 代码：	R-PDSO-G28	JESD-609代码：	e0
长度：	9.7 mm	湿度敏感等级：	3
频带数量：	2	信道数量：	2
功能数量：	1	端子数量：	28
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：	TSSOP
封装等效代码：	TSSOP28,.25	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	235
电源：	5 V	认证状态：	Not Qualified
座面最大高度：	1.1 mm	子类别：	Audio/Video Amplifiers
最大压摆率：	21 mA	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	4.5 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子面层：	Tin/Lead (Sn85Pb15)
端子形式：	GULL WING	端子节距：	0.65 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	30
宽度：	4.4 mm	Base Number Matches：	1

LM4832MTX 数据手册

December 2003

LM4832

Digitally Controlled Tone and Volume Circuit with Stereo

Audio Power Amplifier, Microphone Preamp Stage and

National 3D Sound

General Description

Key Specifications

n Output Power at 10% into 8Ω

n Output Power at 10% into 32Ω

n THD+N at 75mW into 32Ω at 1kHz

n Microphone Input Referred Noise

n Supply Current

350mW (typ)

100mW (typ)

0.5% (max)

7µV (typ)

13mA (typ)

4µA (typ)

The LM4832 is a monolithic integrated circuit that provides

volume and tone (bass and treble) controls as well as a

stereo audio power amplifier capable of producing 250 mW

(typ) into 8Ω or 90 mW (typ) into 32Ω with less than 1.0%

THD. In addition, a two input microphone preamp stage, with

volume control, capable of driving a 1 kΩ load is imple-

mented on chip.

n Shutdown Current

The LM4832 also features National’s 3D Sound circuitry

which can be externally adjusted via a simple RC network.

For maximum system flexibility, the LM4832 has an exter-

nally controlled, low-power consumption shutdown mode,

and an independent mute for power and microphone ampli-

fiers .

Features

n Independent Left and Right Output Volume Controls

n Treble and Bass Control

n National 3D Sound

n I²C Compatible Interface

Boomer^®audio integrated circuits were designed specifically

to provide high quality audio while requiring few external

components. Since the LM4832 incorporates tone and vol-

ume controls, a stereo audio power amplifier and a micro-

phone preamp stage, it is optimally suited to multimedia

monitors and desktop computer applications.

n Two Microphone Inputs with Selector

n Software Controlled Shutdown Function

Applications

n Multimedia Monitors

n Portable and Desktop Computers

Block Diagram

10001401

FIGURE 1. LM4832 Block Diagram

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

DS100014

www.national.com

12 3 4 5 6 7...23

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