欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: LM4868LQ
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 音頻/視頻放大
英文描述: Output-Transient-Free Dual 2.1W Audio Amplifier Plus No Coupling Capacitor Stereo Headphone Function
中文描述: 3 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC24
封裝: EXPOSED PAD, PLASTIC, LLP-24
文件頁數: 19/28頁
文件大小: 792K
代理商: LM4868LQ
Application Information
(Continued)
f
L
= 100Hz/5 = 20Hz
(12)
and an
f
H
= 20kHz x 5 = 100kHz
(13)
As mentioned in the
Selecting Proper External Compo-
nents
section, R
and C
create a highpass filter that sets the
amplifier’s lower bandpass frequency limit. Find the coupling
capacitor’s value using Equation (12).
C
i
1/(2
π
R
i
f
L
)
(14)
The result is
1/(2
π
*
20k
*
20Hz) = 0.397μF
(15)
Use a 0.39μF capacitor, the closest standard value.
The product of the desired high frequency cutoff (100kHz in
this example) and the differential gain A
VD
, determines the
upper passband response limit. With A
= 3 and f
=
100kHz, the closed-loop gain bandwidth product (GBWP) is
300kHz. This is less than the LM4868’s 3.5MHz GBWP. With
this margin, the amplifier can be used in designs that require
more differential gain while avoiding performance,restricting
bandwidth limitations.
RECOMMENDED PRINTED CIRCUIT BOARD LAYOUT
Figures 9 through 13 show the recommended four-layer PC
board layout that is optimized for the 24-pin LQ-packaged
LM4868 and associated external components. Figures 14
through 18 show the recommended four-layer PC board
layout that is optimized for the 24-pin MTE-packaged
LM4868 and associated external components. Figures 19
through 21 show the recommended two-layer PC board
layout that is optimized for the 20-pin MT-packaged LM4868
and associated external components. These circuits are de-
signed for use with an external 5V supply and 4
speakers
(or greater) for the MT-packaged LM4868 or 3
speakers (or
greater) for the LQ- and MTE-packaged LM4868.
These circuit boards are easy to use.Apply 5V and ground to
the board’s V
and GND pads, respectively. Connect 4
speakers between the board’s OUTA and +OUTA and
OUTB and +OUTB pads.
20026778
FIGURE 9. Recommended LQ PC Board Layout:
Component-Side Silkscreen
L
www.national.com
19
相關PDF資料
PDF描述
LM4868MT Output-Transient-Free Dual 2.1W Audio Amplifier Plus No Coupling Capacitor Stereo Headphone Function
LM4883-SQ_BOM-001A Demo Board
LM4891IBP 1 Watt Audio Power Amplifier
LM4891IBPX 1 Watt Audio Power Amplifier
LM4891M 1 Watt Audio Power Amplifier
相關代理商/技術參數
參數描述
LM4868MT 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Output-Transient-Free Dual 2.1W Audio Amplifier Plus No Coupling Capacitor Stereo Headphone Function
LM4868MT/NOPB 功能描述:IC AMP AUDIO PWR 3W AB 20TSSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機,2-通道(立體聲) 在某負載時最大輸出功率 x 通道數量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C,麥克風,靜音,短路保護,音量控制 安裝類型:表面貼裝 供應商設備封裝:25-WLP(2.09x2.09) 封裝/外殼:25-WFBGA,WLCSP 包裝:帶卷 (TR)
LM4868MTE 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Output-Transient-Free Dual 2.1W Audio Amplifier Plus No Coupling Capacitor Stereo Headphone Function
LM4868MTE/NOPB 功能描述:IC AMP AUDIO PWR 3W AB 20TSSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機,2-通道(立體聲) 在某負載時最大輸出功率 x 通道數量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C,麥克風,靜音,短路保護,音量控制 安裝類型:表面貼裝 供應商設備封裝:25-WLP(2.09x2.09) 封裝/外殼:25-WFBGA,WLCSP 包裝:帶卷 (TR)
LM4869 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1.9W Differential Input, BTL Output Stereo Audio Amplifier with Selectable Gain and Shutdown
主站蜘蛛池模板: 饶阳县| 盐城市| 竹山县| 饶河县| 长宁区| 宿州市| 景洪市| 武邑县| 正阳县| 德惠市| 澳门| 韶关市| 三亚市| 嵊泗县| 石河子市| 江达县| 连城县| 石阡县| 凤城市| 永城市| 萨嘎县| 错那县| 昭觉县| 城固县| 南投县| 嫩江县| 枝江市| 清新县| 崇左市| 会泽县| 易门县| 黎川县| 长葛市| 高邮市| 平安县| 美姑县| 南皮县| 思茅市| 惠安县| 无极县| 贞丰县|