參數(shù)資料
型號(hào): LM4810
廠商: National Semiconductor Corporation
英文描述: Dual 105mW Headphone Amplifier with Active-High Shutdown Mode
中文描述: 雙105mW耳機(jī)放大器與高電平關(guān)斷模式
文件頁數(shù): 1/18頁
文件大小: 928K
代理商: LM4810
LM4810
Dual 105mW Headphone Amplifier with Active-High
Shutdown Mode
General Description
The LM4810 is a dual audio power amplifier capable of
delivering 105mW per channel of continuous average power
into a 16
load with 0.1% (THD+N) from a 5V power supply.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. Since the LM4810 does not require
bootstrap capacitors or snubber networks, it is optimally
suited for low-power portable systems.
The unity-gain stable LM4810 can be configured by external
gain-setting resistors.
The LM4810 features an externally controlled, active-high,
micropower consumption shutdown mode, as well as an
internal thermal shutdown protection mechanism.
Key Specifications
n
THD+N at 1kHz, 105mW continuous average power into
16
0.1% (typ)
n
THD+N at 1kHz, 70mW continuous average power into
32
n
Shutdown Current
0.1% (typ)
0.4μA (typ)
Features
n
Active-high shutdown mode
n
LLP, MSOP, and SO surface mount packaging
n
"Click and Pop" suppression circuitry
n
Low shutdown current
n
No bootstrap capacitors required
n
Unity-gain stable
Applications
n
Cellular Phones
n
Personal Computers
n
Microphone Preamplifier
n
PDA’s
Typical Application
Boomer
is a registered trademark of National Semiconductor Corporation.
20008901
*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 2002
L
2002 National Semiconductor Corporation
DS200089
www.national.com
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