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参数资料
| 型号： | LM4854MT/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 0.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 |
| 封装： | TSSOP-14 |
| 文件页数： | 17/29页 |
| 文件大小： | 1440K |
| 代理商： | LM4854MT/NOPB |
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Application Information (Continued)
The product of the desired high frequency cutoff (100kHz in
this example) and the differential gain AVD, determines the
upper passband response limit. With AVD = 3 and fH =
100kHz, the closed-loop gain bandwidth product (GBWP) is
300kHz. This is less than the LM4854’s 3.5MHz GBWP. With
this margin, the amplifier can be used in designs that require
more differential gain while avoiding performance restricting
bandwidth limitations.
RECOMMENDED PRINTED CIRCUIT BOARD LAYOUT
Figures 5 through 9 show the recommended four-layer PC
board layout that is optimized for the micro SMD-packaged
LM4854 and associated external components. Figures 10
through 12 show the recommended two-layer PC board
layout that is optimized for the TSSOP-packaged LM4854
and associated external components. Figures 13 through 17
show the recommended four-layer PC board layout that is
optimized for the LLP-packaged LM4854 and associate ex-
ternal components.
These circuits are designed for use with an external 5V
supply and 8
(min) speakers.These circuit boards are easy
to use. Apply 5V and ground to the board’s V
DD and GND
pads, respectively. Connect a speaker between the board’s
L-OUT and BTL-OUT or headphones to the headphone jack
(L-OUT and R-OUT outputs).
Demonstration Board Layout
20038221
FIGURE 5. Recommended microSMD PC Board
Layout:
Component-Side SilkScreen
20038222
FIGURE 6. Recommended microSMD PC Board
Layout:
Component-Side Layout
20038223
FIGURE 7. Recommended microSMD PC Board
Layout:
Upper Inner-Layer Layout
20038224
FIGURE 8. Recommended microSMD PC Board
Layout:
Lower Inner-Layout Layer
LM4854
www.national.com
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相关PDF资料 |
PDF描述 |
|---|---|
| LM4854MTX/NOPB | 0.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 |
| LM4854LD/NOPB | 0.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 |
| LM4854LDX/NOPB | 0.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 |
| LM4856LQ/NOPB | 1.5 W, 3 CHANNEL, AUDIO AMPLIFIER, QCC24 |
| LM4856ITL/NOPB | 1.1 W, 3 CHANNEL, AUDIO AMPLIFIER, PBGA18 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4854MTX/NOPB | 功能描述:IC AMP AUDIO PWR 2.3W AB 14TSSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4855 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Boomer AUDIO POWER AMPLIFIER Integrated Audio Amplifier System |
| LM48555 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Ceramic Speaker Driver |
| LM48555TL | 制造商:Texas Instruments 功能描述:Audio Amp Speaker 1-CH Mono Class-AB 12-Pin uSMD T/R 制造商:Texas Instruments 功能描述:IC AMP POWER AUDIO SMD |
| LM48555TL/NOPB | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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