- 您现在的位置：买卖IC网 > PDF目录30750 > LM3875MDC (NATIONAL SEMICONDUCTOR CORP) 56 W, 1 CHANNEL, AUDIO AMPLIFIER, UUC PDF资料下载
参数资料
| 型号： | LM3875MDC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 56 W, 1 CHANNEL, AUDIO AMPLIFIER, UUC |
| 封装： | DIE |
| 文件页数： | 8/21页 |
| 文件大小： | 582K |
| 代理商： | LM3875MDC |
Definition of Terms (Continued)
then we have the following:
GBWP = A
CL2 xf2
This says that once fu (GBWP) is known for an amplifier,
then the open-loop gain can be found at any frequency. This
is also an excellent equation to determine the 3 dB point of a
closed-loop gain, assuming that you know the GBWP of the
device. Refer to the diagram below.
Bi-amplification: The technique of splitting the audio fre-
quency spectrum into two sections and using individual
power amplifiers to drive a separate woofer and tweeter.
Crossover frequencies for the amplifiers usually vary be-
tween 500 Hz and 1600 Hz. “Biamping” has the advantages
of allowing smaller power amps to produce a given sound
pressure level and reducing distortion effects produced by
overdrive in one part of the frequency spectrum affecting the
other part.
C.C.I.R./A.R.M.:
Literally:
International
Radio
Consultative
Committee
Average Responding Meter
This refers to a weighted noise measurement for a Dolby B
type noise reduction system. A filter characteristic is used
that gives a closer correlation of the measurement with the
subjective annoyance of noise to the ear. Measurements
made with this filter cannot necessarily be related to un-
weighted noise measurements by some fixed conversion
factor since the answers obtained will depend on the spec-
trum of the noise source.
S.P.L.: Sound Pressure Level — usually measured with a
microphone/meter combination calibrated to a pressure level
of 0.0002 Bars (approximately the threshold hearing level).
S.P.L. = 20 Log 10P/0.0002 dB
Where P is the R.M.S sound pressure in microbars. (1 Bar =
1 atmosphere = 14.5 lb./in2 = 194 dB S.P.L.).
DS011449-14
LM3875
www.national.com
16
相关PDF资料 |
PDF描述 |
|---|---|
| LM3876CCT | 40 W, 1 CHANNEL, AUDIO AMPLIFIER, PSFM11 |
| LM3876DWF | 56 W, 1 CHANNEL, AUDIO AMPLIFIER, UUC |
| LM3876MWC | 56 W, 1 CHANNEL, AUDIO AMPLIFIER, UUC |
| LM3876MDC | 56 W, 1 CHANNEL, AUDIO AMPLIFIER, UUC |
| LM387N | VIDEO PREAMPLIFIER, PDIP8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM3875T | 功能描述:IC AMP AUDIO PWR 56W AB TO220-11 RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Overture™ 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) |
| LM3875T | 制造商:Texas Instruments 功能描述:IC AMP AUDIO 100W 3875 SIL-11 |
| LM3875T/NOPB | 制造商:Texas Instruments 功能描述:Audio Amp Speaker 1-CH Mono 56W Class-AB 11-Pin(11+Tab) TO-220 |
| LM3875TF | 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 |
| LM3875TF/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 |
发布紧急采购，3分钟左右您将得到回复。