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參數(shù)資料
| 型號： | LM3875T/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 56 W, 1 CHANNEL, AUDIO AMPLIFIER, PZFM11 |
| 封裝： | LEAD FREE, PLASTIC, TO-220, 11 PIN |
| 文件頁數(shù)： | 10/20頁 |
| 文件大?。?/td> | 1006K |
| 代理商： | LM3875T/NOPB |
Definition of Terms (Continued)
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./in
2 = 194 dB S.P.L.).
01144914
FIGURE 3.
LM3875
www.national.com
18
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM399AH-20#TRPBF | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 6.95 V, MBCY4 |
| LM399AH-50#TR | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 6.95 V, MBCY4 |
| LM199AH#PBF | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 6.95 V, MBCY4 |
| LM399AH-50#PBF | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 6.95 V, MBCY4 |
| LM199AH-20#PBF | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 6.95 V, MBCY4 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3876 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Audio Power Amplifier Series High-Performance 56W Audio Power Amplifier w/Mute |
| LM3876_00 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Audio Power Amplifier Series High-Performance 56W Audio Power Amplifier w/Mute |
| LM3876CCT | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single Audio Amplifier |
| LM3876T | 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM3876T | 制造商:National Semiconductor Corporation 功能描述:56W W/Mute, 1 Channel Lm3876T IC Audio Amp |
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