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參數資料
| 型號： | LM4924 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 2 Cell Battery, 40mW Per Channel Output Capacitor-Less(OCL) Stereo Headphone Audio Amplifier |
| 中文描述： | 2節電池，每通道40mW的輸出電容無（八達通卡）立體聲耳機音頻放大器 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 425K |
| 代理商： | LM4924 |
LM4924
2 Cell Battery, 40mW Per Channel Output Capacitor-Less
(OCL) Stereo Headphone Audio Amplifier
General Description
The LM4924 is a Output Capacitor-Less (OCL) stereo head-
phone amplifier, which when connected to a 3.0V supply,
delivers 40mW per channel to a 16
load with less than 1%
THD+N.
With the LM4924 packaged in the MM and SD packages, the
customer benefits include low profile and small size. These
packages minimizes PCB area and maximizes output power.
The LM4924 features circuitry that reduces output transients
(“clicks” and “pops”) during device turn-on and turn-off, and
Mute On and Off. An externally controlled, low-power con-
sumption, active-low shutdown mode is also included in the
LM4924. Boomer audio power amplifiers are designed spe-
cifically to use few external components and provide high
quality output power in a surface mount packages.
Key Specifications
n
OCL output power
n
(R
L
= 16
, V
DD
= 3.0V, THD+N = 1%)
n
Micropower shutdown current
n
Supply voltage operating range
n
PSRR 100Hz, V
DD
= 3.0V, A
V
= 2.5
40mW (typ)
0.1μA (typ)
1.5V
<
V
DD
<
3.6V
66dB (typ)
Features
n
2-cell 1.5V to 3.6V battery operation
n
OCL mode for stereo headphone operation
n
Unity-gain stable
n
“Click and pop” suppression circuitry for shutdown On
and Off transients
n
Active low micropower shutdown
n
Thermal shutdown protection circuitry
Applications
n
Portable two-cell audio products
n
Portable two-cell electronic devices
Typical Application
Boomer
is a registered trademark of National Semiconductor Corporation.
20121057
FIGURE 1. Block Diagram
October 2004
L
A
2004 National Semiconductor Corporation
DS201210
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LM4924MM | 2 Cell Battery, 40mW Per Channel Output Capacitor-Less(OCL) Stereo Headphone Audio Amplifier |
| LM4924SD | 2 Cell Battery, 40mW Per Channel Output Capacitor-Less(OCL) Stereo Headphone Audio Amplifier |
| LM4929 | Stereo 40mW Low Noise Headphone Amplifier with OCL Output |
| LM4929MM | Stereo 40mW Low Noise Headphone Amplifier with OCL Output |
| LM4930ITL | CAP CER 15000PF 10% 50V X7R 1206 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4924MM | 功能描述:音頻放大器 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 |
| LM4924MM/NOPB | 功能描述:音頻放大器 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 |
| LM4924MMBD | 功能描述:BOARD EVALUATION LM4924MM RoHS:否 類別:編程器，開發系統 >> 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:- |
| LM4924MMX | 功能描述:音頻放大器 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 |
| LM4924MMX/NOPB | 功能描述:音頻放大器 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 |
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