參數(shù)資料
型號: LM4961
廠商: National Semiconductor Corporation
英文描述: Ceramic Speaker Driver
中文描述: 陶瓷揚聲器驅(qū)動器
文件頁數(shù): 1/16頁
文件大小: 509K
代理商: LM4961
LM4961
Ceramic Speaker Driver
General Description
The LM4961 is an audio power amplifier primarily designed
for driving Ceramic Speaker for applications in Cell Phone
and PDAs. It integrates a boost converter, with variable
output voltage, with an audio power amplifier. It is capable of
driving 15V
in BTL mode to 2uF+ 30 ohms load, continu-
ous average power, with less than 1% distortion (THD+N)
from a 3.2V
DC
power supply.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal number of
external components. The LM4961 does not require boot-
strap capacitors, or snubber circuits therefore it is ideally
suited for portable applications requiring high voltage output
to drive capacitive loads like Ceramic Speakers. The
LM4961 features a low-power consumption shutdown mode.
Additionally, the LM4961 features an internal thermal shut-
down protection mechanism.
The LM4961 contains advanced pop & click circuitry that
eliminates noises which would otherwise occur during
turn-on and turn-off transitions.
The LM4961 is unity-gain stable and can be configured by
external gain-setting resistors.
Key Specifications
n
Quiescent Power Supply Current
n
Voltage Swing in BTL at 1% THD
n
Shutdown current
7mA (typ)
15Vp-p (typ)
0.1μA (typ)
Features
n
Pop & click circuitry eliminates noise during turn-on and
turn-off transitions
n
Low current shutdown mode
n
Low quiescent current
n
Mono 15Vp-p BTL output, R
L
= 2μF+30
, f = 1kHz
n
Thermal shutdown protection
n
Unity-gain stable
n
External gain configuration capability
n
Including Band exchange SW
n
Including Leakage cut SW
Applications
n
Cellphone
n
PDA
Connection Diagram
LM4961LQ (5x5)
20094084
Top View
Order Number LM4XXX
See NS Package Number
Boomer
is a registered trademark of National Semiconductor Corporation.
October 2004
L
2004 National Semiconductor Corporation
DS200940
www.national.com
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4961LQ 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
LM4961LQ/NOPB 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
LM4961LQBD 功能描述:音頻 IC 開發(fā)工具 LM4961LQ EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
LM4961LQBD/NOPB 制造商:Texas Instruments 功能描述:Evaluation Kit For Ceramic Speaker Driver
LM4961LQX 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel