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參數(shù)資料
| 型號(hào)： | LM4924SD |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2 Cell Battery, 40mW Per Channel Output Capacitor-Less(OCL) Stereo Headphone Audio Amplifier |
| 中文描述： | 0.04 W, 2 CHANNEL, AUDIO AMPLIFIER, DSO10 |
| 封裝： | LLP-10 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 425K |
| 代理商： | LM4924SD |
Application Information
(Continued)
As mentioned in the
Selecting Proper External Compo-
nents
section, R
i
and C
i
create a highpass filter that sets the
amplifier’s lower bandpass frequency limit. Find the coupling
capacitor’s value using Equation (3).
C
i
≥
1/(2
π
R
i
f
L
)
(5)
The result is
1/(2
π
*20k
*20Hz) = 0.397μF
Use a 0.39μF capacitor, the closest standard value.
The high frequency pole is determined by the product of the
desired frequency pole, f
, and the differential gain, A
. With
an A
V
= 1 and f
H
= 100kHz, the resulting GBWP = 100kHz
which is much smaller than the LM4924 GBWP of 11MHz.
This figure displays that if a designer has a need to design
an amplifier with higher differential gain, the LM4924 can still
be used without running into bandwidth limitations.
HIGHER GAIN AUDIO AMPLIFIER
20121029
FIGURE 3.
L
www.national.com
12
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4924SD/NOPB | 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4924SDBD | 功能描述:BOARD EVALUATION LM4924SD RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- |
| LM4924SDX | 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4924SDX/NOPB | 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4925 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:2 Cell, Single Ended Output, 40mW Stereo Headphone Audio Amplifier |
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