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參數(shù)資料
| 型號： | LM4892 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 1 Watt Audio Power Amplifier with Headphone Sense |
| 中文描述： | 1瓦音頻功率放大器意識與耳機(jī) |
| 文件頁數(shù)： | 13/22頁 |
| 文件大?。?/td> | 1037K |
| 代理商： | LM4892 |
Application Information
(Continued)
The LM4892 is unity-gain stable and requires no external
components besides gain-setting resistors, an input coupling
capacitor, and proper supply bypassing in the typical appli-
cation. However, if a closed-loop differential gain of greater
than 10 is required, a feedback capacitor (C
f
) may be
needed as shown in Figure 3 to bandwidth limit the amplifier.
This feedback capacitor creates a low pass filter that elimi-
nates possible high frequency oscillations. Care should be
taken when calculating the -3dB frequency in that an incor-
rect combination of R
f
and C
f
will cause rolloff before 20kHz.
A typical combination of feedback resistor and capacitor that
will not produce audio band high frequency rolloff is R
f
=
20k
and C
= 25pF. These components result in a -3dB
point of approximately 320 kHz.
20012724
FIGURE 3. Higher Gain Audio Amplifier
L
www.national.com
13
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| LM4892IBP | 1 Watt Audio Power Amplifier with Headphone Sense |
| LM4892IBPX | 1 Watt Audio Power Amplifier with Headphone Sense |
| LM4894MM | 1 Watt Fully Differential Audio Power Amplifier With Shutdown Select |
| LM4894 | 1 Watt Fully Differential Audio Power Amplifier With Shutdown Select |
| LM4894IBP | 1 Watt Fully Differential Audio Power Amplifier With Shutdown Select |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM48920B WAF | 制造商:Texas Instruments 功能描述: |
| LM4892B E WAF | 制造商:Texas Instruments 功能描述: |
| LM4892BUPN E WAF | 制造商:Texas Instruments 功能描述: |
| LM4892IBP | 功能描述:IC AMP AUDIO PWR 1W MONO 8USMD RoHS:否 類別:集成電路 (IC) >> 線性 - 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:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4892IBPX | 制造商:Rochester Electronics LLC 功能描述:1W AUDIO AMP WITH HEADPHONE SE - Bulk |
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