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LM4830N PDF预览

LM4830N

更新时间: 2024-01-06 07:36:31
品牌 Logo 应用领域
美国国家半导体 - NSC /
页数 文件大小 规格书
14页 461K
描述
Two-Way Audio Amplification System with Volume Control

LM4830N 技术参数

是否无铅: 含铅生命周期:Active
零件包装代码:DIP包装说明:0.600 IINCH, PLASTIC, DIP-24
针数:24Reach Compliance Code:unknown
风险等级:5.82商用集成电路类型:AUDIO AMPLIFIER
谐波失真:0.2%JESD-30 代码:R-PDIP-T24
JESD-609代码:e0长度:31.915 mm
湿度敏感等级:NOT SPECIFIED信道数量:2
功能数量:1端子数量:24
最高工作温度:85 °C最低工作温度:-40 °C
标称输出功率:2 W封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装形状:RECTANGULAR
封装形式:IN-LINE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:COMMERCIAL座面最大高度:5.334 mm
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):2.7 V
表面贴装:NO温度等级:INDUSTRIAL
端子面层:TIN LEAD端子形式:THROUGH-HOLE
端子节距:2.54 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:15.24 mm

LM4830N 数据手册

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January 1999  
LM4830  
Two-Way Audio Amplification System  
with Volume Control  
General Description  
Key Specifications  
n THD at 1W cont. avg PO into 8: 1% (max)  
The LM4830 is an integrated solution for two-way audio am-  
plification. It contains a bridge-connected audio power ampli-  
fier capable of delivering 1W of continuous average power to  
an 8load with less than 1% THD from a 5V power supply.  
n Instantaneous peak output power: 1.4W  
n Shutdown current: 0.5 µA (typ)  
n Supply voltage range: 2.7V V  
5.5V  
DD  
It also has the capability of driving 100 mW into  
a
single-ended 32impedance for headset operation. There  
is a 30 dB attenuator in front of a bridged power amplifier  
with 6 dB of gain. The attenuation is controlled through 4 bits  
of parallel digital control; 15 steps of 2 dB each.  
Features  
n 4-bit digital control for 30 dB of volume attenuation  
n Two selectable microphone inputs  
n High performance microphone preamp  
n Extra buffer for driving long cables  
n No bootstrap capacitors or snubber circuits are  
necessary  
The device also contains a microphone preamp with two se-  
lectable inputs. Mic2 is selected when HS is high and A1 is in  
single-ended mode. Mic1 is selected when HS is low and A1  
is in bridged mode. This configuration is optimum for switch-  
ing between an internal system speaker and external head-  
set with microphone. The device also incorporates a buffer  
used for driving capacitive loads.  
n Small Outline (SO) packaging  
n Thermal shutdown protection circuitry  
The LM4830 also provides a low-current consumption shut-  
down mode making it optimally suited for low-power portable  
systems. In addition, the device has an internal thermal shut-  
down protection mechanism.  
Applications  
n Hands-free phone systems  
n Mobile phone accessories  
n Desktop conference phones  
n Portable computers  
n Teleconference computer applications  
Connection Diagram  
Dual-In-Line and  
Small Outline Packages  
DS012677-2  
Top View  
Order Number LM4830M  
See NS Package Number M24B for SO  
Order Number LM4830N  
See NS Package Number N24A for DIP  
© 1999 National Semiconductor Corporation  
DS012677  
www.national.com  

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