參數(shù)資料
型號: LM4880N
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 音頻/視頻放大
英文描述: Dual 250 mW Audio Power Amplifier with Shutdown Mode
中文描述: 0.325 W, 2 CHANNEL, AUDIO AMPLIFIER, PDIP8
封裝: 0.300 INCH, MDIP-8
文件頁數(shù): 1/12頁
文件大小: 375K
代理商: LM4880N
LM4880
Dual 250 mW Audio Power Amplifier with Shutdown
Mode
General Description
The LM4880 is a dual audio power amplifier capable of deliv-
ering typically 250 mW per channel of continuous average
power to an 8
load with 0.1% (THD) using a 5V power sup-
ply.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components using surface mount packaging.
Since the LM4880 does not require bootstrap capacitors or
snubber networks, it is optimally suited for low-power por-
table systems.
The LM4880 features an externally controlled, low-power
consumption shutdown mode, as well as an internal thermal
shutdown protection mechanism.
The unity-gain stable LM4880 can be configured by external
gain-setting resistors.
Key Specifications
n
THD at 1 kHz at 200 mW continuous average output
power into 8
:
0.1% (max)
n
THD at 1 kHz at 85 mW continuous average output
power into 32
:
0.1% (typ)
n
Output power at 10% THD + N at 1 kHz into 8
:
325 mW (typ)
n
Shutdown Current:
0.7 μA (typ)
Features
n
No bootstrap capacitors or snubber circuits are
necessary
n
Small Outline (SO) and DIP packaging
n
Unity-gain stable
n
External gain configuration capability
Applications
n
Headphone Amplifier
n
Personal Computers
n
CD-ROM Players
Typical Application
Boomer
is a registered trademark of National Semiconductor Corporation.
DS012343-1
*
Refer to the
Application Information
section for information concerning proper selection of the input and output coupling capacitors.
FIGURE 1. Typical Audio Amplifier Application Circuit
November 1995
L
S
1999 National Semiconductor Corporation
DS012343
www.national.com
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