Application Information (Continued) The LM4872 is unity-gain stable and requires no external components " />
參數(shù)資料
型號(hào): LM4872IBP
廠(chǎng)商: National Semiconductor
文件頁(yè)數(shù): 4/17頁(yè)
文件大小: 0K
描述: IC AMP AUDIO PWR 1W MONO 8USMD
標(biāo)準(zhǔn)包裝: 1
系列: Boomer®
類(lèi)型: AB 類(lèi)
輸出類(lèi)型: 1-通道(單聲道)
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量: 1W x 1 @ 8 歐姆
電源電壓: 2 V ~ 5.5 V
特點(diǎn): 關(guān)閉,熱保護(hù)
安裝類(lèi)型: 表面貼裝
供應(yīng)商設(shè)備封裝: 8-uSMD
封裝/外殼: 8-VFBGA
包裝: 剪切帶 (CT)
其它名稱(chēng): *LM4872IBP
LM4872IBPCT
Application Information (Continued)
The LM4872 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 may be needed as
shown in Figure 2 to bandwidth limit the amplifier. This
feedback capacitor creates a low pass filter that eliminates
possible high frequency oscillations. Care should be taken
when calculating the -3dB frequency in that an incorrect
combination of R
3 and C4 will cause rolloff before 20kHz. A
typical combination of feedback resistor and capacitor that
will not produce audio band high frequency rolloff is R
3 =
20k
and C
4 = 25pf. These components result in a -3dB
point of approximately 320 kHz. It is not recommended that
the feedback resistor and capacitor be used to implement a
band limiting filter below 100kHZ.
10123024
FIGURE 2. Higher Gain Audio Amplifier
LM4872
www.national.com
11
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LM4872IBPX 功能描述:IC AMP AUDIO PWR 1W MONO 8USMD RoHS:是 類(lèi)別:集成電路 (IC) >> 線(xiàn)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(lèi)型:H 類(lèi) 輸出類(lèi)型:耳機(jī),2-通道(立體聲) 在某負(fù)載時(shí)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(lèi)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)
LM4872ITP 制造商:Texas Instruments 功能描述:AMP AUDIO 1W BOOMER SMD 4872
LM4872ITP/NOPB 功能描述:IC AMP AUDIO PWR 1W MONO 8USMD RoHS:是 類(lèi)別:集成電路 (IC) >> 線(xiàn)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(lèi)型:H 類(lèi) 輸出類(lèi)型:耳機(jī),2-通道(立體聲) 在某負(fù)載時(shí)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(lèi)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)
LM4872ITPX/NOPB 制造商:Texas Instruments 功能描述:
LM4873 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Dual 2.1W Audio Amplifier Plus Stereo Headphone Function