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參數(shù)資料
| 型號(hào)： | AM79761 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | Physical Layer 10-Bit Transceiver for Gigabit Ethernet (GigaPHY⑩-SD) |
| 中文描述： | 物理層10位千兆以太網(wǎng)收發(fā)器（GigaPHY⑩，標(biāo)清） |
| 文件頁數(shù)： | 19/20頁 |
| 文件大小： | 132K |
| 代理商： | AM79761 |
Am79761
19
P R E L I M I N A R Y
THERMAL CONSIDERATIONS
The Am79761 is packaged in a 14-mm or a 10-mm
conventional PQFP with an internal heat spreader. These
packages use an industry-standard EIAJ footprint, but
have been enhanced to improve thermal dissipation. The
construction of the packages are as shown in Figure 26.
Figure 26.
Package Cross Section
Table 24.
Thermal Resistance
The Am79761 is designed to operate with a junction
temperature up to 105
o
C. The user must guarantee
that the temperature specification is not violated. With
the Thermal Resistances shown above, the 10x10
PQFP can operate in still air ambient temperatures of
50
o
C, while the 14x14 PQFP can operate in still air am-
bient temperatures of 72
o
C. If the ambient air tempera-
ture exceeds these limits then some form of cooling
through a heatsink or an increase in airflow must be
provided.
Notes:
1. 50
o
C=110
o
C-1W*(10
o
C/W+50.8
o
C/W)
2. 72
o
C=110
o
C-1W*(95
o
C/W+29
o
C/W)
Symbol
Description
10 mm Value
14 mm Value
Units
θ
jc
Thermal resistance from junction to case
10.0
9.5
o
C/W
θ
ca
Thermal resistance from case to ambient in still air including
conduction through the leads.
50.8
29
o
C/W
θ
ca-100
Thermal resistance from case to ambient with 100 LFM airflow
41.2
26.1
o
C/W
θ
ca-200
Thermal resistance from case to ambient with 200 LFM airflow
36.9
23.8
o
C/W
θ
ca-400
Thermal resistance from case to ambient with 400 LFM airflow
31.8
20.5
o
C/W
θ
ca-600
Thermal resistance from case to ambient with 600 LFM airflow
27.8
17.9
o
C/W
Copper Heat Spreader
Plastic Molding Compound
Lead
Bond Wire
Die
21560A-12
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| AM79865 | PHYSICAL DATA TRANSMITTER/PHYSICAL DATA RECEIVER |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM79761YC-10 | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Physical Layer 10-Bit Transceiver for Gigabit Ethernet (GigaPHY⑩-SD) |
| AM79761YC-14 | 制造商:Advanced Micro Devices 功能描述:LAN Transceiver, Single, 64 Pin, Plastic, QFP |
| AM7984AJC/10/DV | 制造商:Advanced Micro Devices 功能描述: |
| AM7984AJC/20 | 制造商:Advanced Micro Devices 功能描述: |
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