參數(shù)資料
型號(hào): L80227
廠商: LSI CORP
元件分類: 網(wǎng)絡(luò)接口
英文描述: 10BASE-T/100BASE-TX Ethernet Physical Layer Device (PHY)(10BASE-T/100BASE-TX 以太網(wǎng)物理層處理器)
中文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP64
封裝: LQFP-64
文件頁數(shù): 150/158頁
文件大?。?/td> 1084K
代理商: L80227
Draft 6/5/00
A-16
Application Information
Copyright 1999 by LSI Logic Corporation. All rights reserved.
0.5 inches. The value should be chosen based on whether the noise
from V
DD
-GND is high- or low-frequency. A conservative approach would
be to use two decoupling capacitors on each V
DD
/GND set, one 0.1 ffor
low-frequency and one 0.001 ffor high-frequency noise on the power
supply.
The V
DD
connection to the transmit transformer center tap shown in
Figure A.1
through
Figure A.3
has to be well decoupled to minimize
common mode noise injection from the supply into the twisted-pair cable.
It is recommended that a 0.01 Fdecoupling capacitor be placed between
the center tap V
DD
and the GND plane. This decoupling capacitor should
be physically placed as close as possible to the transformer center tap,
preferably within 0.5"
The PCB layout and power supply decoupling discussed above should
provide sufficient decoupling to achieve the following when measured at
the device:
The resultant AC noise voltage measured across each V
DD
/GND set
should be less than 100 mV p-p
All V
DD
pins should be within 50 mV p-p of each other
All GND pins should be within 50 mV p-p of each other.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L80227/B 制造商:LSI Corporation 功能描述: 制造商:LSI Corporation 功能描述:L80227/B
L80227/BI 制造商:LSI Corporation 功能描述:L80227/BI
L80227FR 制造商:LAUREL ELECTRONICS 功能描述:Laureate 1/8 DIN multi-function counter / timer, universal 85-264 Vac power, two
L80227-I 制造商:LSI Corporation 功能描述:STD CELL ASIC
L80227-I-LEADFREE 制造商:LSI Corporation 功能描述:796000124413