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參數(shù)資料
| 型號(hào)： | LM4893ITL |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.1 Watt Audio Power Amplifier |
| 中文描述： | 1.1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| 封裝： | MICRO, SMD-9 |
| 文件頁(yè)數(shù)： | 19/22頁(yè) |
| 文件大?。?/td> | 705K |
| 代理商： | LM4893ITL |
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Application Information
(Continued)
Mono LM4893 Reference Design Boards
Bill of Material for all 3 Demo Boards
Item
1
10
20
21
25
30
35
Part Number
551011208-001 LM4893 Mono Reference Design Board
482911183-001 LM4893 Audio AMP
151911207-001 Tant Cap 1uF 16V 10
151911207-002 Cer Cap 0.39uF 50V Z5U 20% 1210
152911207-001 Tant Cap 1.0uF 16V 10
472911207-001 Res 20K Ohm 1/10W 5
210007039-002 Jumper Header Vertical Mount 2X1 0.100
Part Description
Qty
1
1
1
1
1
3
2
Ref Designator
U1
C1
C2
C3
R1, R2, R3
J1, J2
PCB LAYOUT GUIDELINES
This section provides practical guidelines for mixed signal
PCB layout that involves various digital/analog power and
ground traces. Designers should note that these are only
"rule-of-thumb" recommendations and the actual results will
depend heavily on the final layout.
General Mixed Signal Layout Recommendations
POWER AND GROUND CIRCUITS
For 2 layer mixed signal design, it is important to isolate the
digital power and ground trace paths from the analog power
and ground trace paths. Star trace routing techniques (bring-
ing individual traces back to a central point rather than daisy
chaining traces together in a serial manner) can have a
major impact on low level signal performance. Star trace
routing refers to using individual traces to feed power and
ground to each circuit or even device. This technique will
take require a greater amount of design time but will not
increase the final price of the board. The only extra parts
required may be some jumpers.
SINGLE-POINT POWER / GROUND CONNECTIONS
The analog power traces should be connected to the digital
traces through a single point (link). A "Pi-filter" can be helpful
in minimizing high frequency noise coupling between the
analog and digital sections. It is further recommended to put
digital and analog power traces over the corresponding digi-
tal and analog ground traces to minimize noise coupling.
PLACEMENT OF DIGITAL AND ANALOG
COMPONENTS
All digital components and high-speed digital signals traces
should be located as far away as possible from analog
components and circuit traces.
AVOIDING TYPICAL DESIGN / LAYOUT PROBLEMS
Avoid ground loops or running digital and analog traces
parallel to each other (side-by-side) on the same PCB layer.
When traces must cross over each other do it at 90 degrees.
Running digital and analog traces at 90 degrees to each
other from the top to the bottom side as much as possible will
minimize capacitive noise coupling and cross talk.
L
www.national.com
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| LM4897 | 1.1 Watt Audio Power Amplifier with Fade-In and Fade-Out |
| LM4897MM | 1.1 Watt Audio Power Amplifier with Fade-In and Fade-Out |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4893ITL/NOPB | 功能描述:IC AMP AUDIO PWR 1.1W MONO 9USMD 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) |
| LM4893ITLBD | 功能描述:BOARD EVALUATION LM4893ITL 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:- |
| LM4893ITLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1.1 Watt Audio Power Amplifier |
| LM4893MA | 制造商:Texas Instruments 功能描述:AMP, POWER AUDIO, 1.1W, SMD, SOIC8 |
| LM4893MA/NOPB | 功能描述:IC AMP AUDIO PWR 1.1W MONO 8SOIC 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) |
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