參數(shù)資料
型號(hào): LM4877IBPX/NOPB
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 音頻/視頻放大
英文描述: 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8
封裝: MICRO, MO-211-BC, SMD-8
文件頁(yè)數(shù): 3/15頁(yè)
文件大?。?/td> 483K
代理商: LM4877IBPX/NOPB
Application Information (Continued)
HIGHER GAIN AUDIO AMPLIFIER
10129024
Figure 2
The LM4877 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.
LM4877
www.national.com
11
相關(guān)PDF資料
PDF描述
LM4877IBP/NOPB 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8
LM4878IBPX/NOPB 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8
LM4878IBP/NOPB 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8
LM4879MM/NOPB 1.1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10
LM4879IBLX/NOPB 1.1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4877ITP/NOPB 功能描述:IC AMP AUDIO PWR 1W MONO 8USMD RoHS:是 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(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)
LM4878 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1 Watt Audio Power Amplifier in micro SMD package with Shutdown Logic Low
LM4878IBP 功能描述:IC AMP AUDIO PWR 1W MONO 8USMD RoHS:是 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(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)
LM4878IBP/NOPB 功能描述:IC AMP AUDIO PWR 1W MONO 8USMD RoHS:是 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(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)
LM4878IBPX 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1 Watt Audio Power Amplifier in micro SMD package with Shutdown Logic Low