收藏本站
LM4832
Digitally Controlled Tone and Volume Circuit with Stereo
Audio Power Amplifier, Microphone Preamp Stage and
National 3D Sound
General Description
The LM4832 is a monolithic integrated circuit that provides
volume and tone (bass and treble) controls as well as a ste-
reo audio power amplifier capable of producing 250 mW
(typ) into 8
or 90 mW (typ) into 32 with less than 1.0%
THD. In addition, a two input microphone preamp stage, with
volume control, capable of drivinga1k
load is imple-
mented on chip.
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 .
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.
Key Specifications
n
Output Power at 10% into 8
350mW (typ)
n
Output Power at 10% into 32
100mW (typ)
n
THD+N at 75mW into 32
at 1kHz
0.5% (max)
n
Microphone Input Referred Noise
7V (typ)
n
Supply Current
13mA (typ)
n
Shutdown Current
4A (typ)
Features
n
Independent Left and Right Output Volume Controls
n
Treble and Bass Control
n
National 3D Sound
n
I
2C Compatible Interface
n
Two Microphone Inputs with Selector
n
Software Controlled Shutdown Function
Applications
n
Multimedia Monitors
n
Portable and Desktop Computers
Block Diagram
Connection Diagram
Boomer is a registered trademark of National Semiconductor Corporation.
DS100014-1
FIGURE 1. LM4832 Block Diagram
DS100014-2
Top View
Order Number LM4832N, LM4832M
See NS Package Number N28B for DIP
See NS Package Number M28B for SOIC
August 2000
LM4832
Digitally
Controlled
T
one
and
V
olume
Circuit
with
Stereo
Audio
Power
Amplifier
,
Microphone
Preamp
Stage
and
National
3D
Sound
2000 National Semiconductor Corporation
DS100014
www.national.com
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
LM4836MTX/NOPB 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28
LM4842MH/NOPB 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28
LM4842MT/NOPB 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28
LM4842LQ/NOPB 2 CHANNEL(S), TONE CONTROL CIRCUIT, QCC28
LM4849MH/NOPB 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28
LM4867MTE/NOPB 3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20
LM4867MT/NOPB 1.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20
LM4867LQ/NOPB 3 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC24
相关代理商/技术参数
LM4832N 制造商:NSC 制造商全称:National Semiconductor 功能描述:Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
LM4832N/NOPB 功能描述:IC AMP AUDIO PWR .25W STER 28DIP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR)
LM4834 制造商:NSC 制造商全称:National Semiconductor 功能描述:1.75W Audio Power Amplifier with DC Volume Control and Microphone Preamp
LM4834A E WAF 制造商:Texas Instruments 功能描述:
LM4834MS 制造商:Texas Instruments 功能描述:28 pin Boomer 1.75W Audio Power Amplifier with DC Volume Control and Microphone Preamp 47 per tube 制造商:Texas Instruments 功能描述:IC, AUDIO PWR AMP CLASS AB 1.75W SSOP-28, Amplifier Class:AB, No. of Channels:1,
LM4834MS/NOPB 功能描述:IC AMP AUDIO PWR 1.1W AB 28SSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR)
LM4834MSX/NOPB 功能描述:IC AMP AUDIO PWR 1.1W AB 28SSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR)
LM4835 制造商:NSC 制造商全称:National Semiconductor 功能描述:Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain