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參數資料
| 型號： | LM4929MM |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | Stereo 40mW Low Noise Headphone Amplifier with OCL Output |
| 中文描述： | 0.08 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數： | 1/13頁 |
| 文件大小： | 899K |
| 代理商： | LM4929MM |
LM4929
Stereo 40mW Low Noise Headphone Amplifier
with OCL Output
General Description
The LM4929 is an stereo audio power amplifier capable of
delivering 40mW per channel of continuous average power
into a 16
load or 25mW per channel into a 32
load at 1%
THD+N from a 3V power supply.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. Since the LM4929 does not require
bootstrap capacitors or snubber networks, it is optimally
suited for low-power portable systems. The LM4929 is con-
figured for OCL (Output Capacitor-Less) outputs, operating
with no DC blocking capacitors on the outputs.
The LM4929 features a low-power consumption shutdown
mode with a faster turn on time. Additionally, the LM4929
features an internal thermal shutdown protection mecha-
nism.
The LM4929 is unity gain stable and may be configured with
external gain-setting resistors.
Key Specifications
j
PSRR at 217Hz and 1kHz
j
Output Power at 1kHz with V
DD
= 2.4V,
1% THD+N into a 16
load
j
Output Power at 1kHz with V
DD
= 3V,
1% THD+N into a 16
load
j
Shutdown current
j
Output Voltage change on release
from Shutdown V
DD
= 2.4V, R
L
= 16
65dB (typ)
25mW (typ)
40mW (typ)
2.0μA (max)
1mV (max)
Features
n
OCL outputs — No DC Blocking Capacitors
n
External gain-setting capability
n
Available in space-saving MSOP package
n
Ultra low current shutdown mode
n
2V - 5.5V operation
n
Ultra low noise
Applications
n
Portable CD players
n
PDAs
n
Portable electronics devices
Block Diagram
Boomer
is a registered trademark of National Semiconductor Corporation.
20132441
FIGURE 1. Block Diagram
December 2004
L
2004 National Semiconductor Corporation
DS201324
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4929MM/NOPB | 功能描述:音頻放大器 Stereo 40mW Lo Noise Headphone Amp RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4929MMBD | 功能描述:BOARD EVALUATION LM4929MM RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 音頻放大器 系列:Boomer® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- |
| LM4929MMX/NOPB | 功能描述:音頻放大器 Stereo 40mW Lo Noise Headphone Amp RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM492-S | 功能描述:基本/快動開關 Foot Switch RoHS:否 制造商:Omron Electronics 觸點形式:SPDT 執(zhí)行器:Lever 電流額定值:5 A 電壓額定值 AC:250 V 電壓額定值 DC:30 V 功率額定值: 工作力:120 g IP 等級:IP 67 NEMA 額定值: 端接類型:Wire 安裝:Panel |
| LM492-SCE | 功能描述:基本/快動開關 Foot Switch RoHS:否 制造商:Omron Electronics 觸點形式:SPDT 執(zhí)行器:Lever 電流額定值:5 A 電壓額定值 AC:250 V 電壓額定值 DC:30 V 功率額定值: 工作力:120 g IP 等級:IP 67 NEMA 額定值: 端接類型:Wire 安裝:Panel |
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