参数资料
型号: AGLN010V5-UC36
元件分类: FPGA
英文描述: FPGA, 260 CLBS, 10000 GATES, 250 MHz, PBGA36
封装: 4 X 4 MM, 0.8 MM HEIGHT, 0.4 MM PITCH, UC-36
文件页数: 54/140页
文件大小: 4325K
代理商: AGLN010V5-UC36
IGLOO nano DC and Switching Characteristics
2- 6
R ev isio n 1 0
Thermal Characteristics
Introduction
The temperature variable in the Actel Designer software refers to the junction temperature, not the
ambient temperature. This is an important distinction because dynamic and static power consumption
cause the chip junction temperature to be higher than the ambient temperature.
EQ 1 can be used to calculate junction temperature.
TJ = Junction Temperature = ΔT + TA
EQ 1
where:
TA = Ambient temperature
ΔT = Temperature gradient between junction (silicon) and ambient ΔT = θ
ja * P
θ
ja = Junction-to-ambient of the package. θja numbers are located in Figure 2-5.
P = Power dissipation
Package Thermal Characteristics
The device junction-to-case thermal resistivity is
θ
jc and the junction-to-ambient air thermal resistivity is
θ
ja. The thermal characteristics for θja are shown for two air flow rates. The maximum operating junction
temperature is 100°C. EQ 2 shows a sample calculation of the maximum operating power dissipation
allowed for a 484-pin FBGA package at commercial temperature and in still air.
EQ 2
Temperature and Voltage Derating Factors
Maximum Power Allowed
Max. junction temp. (
°C) Max. ambient temp. (°C)
θ
ja(°C/W)
---------------------------------------------------------------------------------------------------------------------------------------
100
°C70°C
20.5°C/W
------------------------------------
1.46 W
=
Table 2-5 Package Thermal Resistivities
Package Type
Pin
Count
θ
jc
θ
ja
Units
Still Air
200 ft./
min.
500 ft./
min.
Chip Scale Package (CSP)
36
TBD
C/W
81
TBD
C/W
Quad Flat No Lead (QFN)
48
TBD
C/W
68
TBD
C/W
100
TBD
C/W
Very Thin Quad Flat Pack (VQFP)
100
10.0
35.3
29.4
27.1
C/W
Table 2-6 Temperature and Voltage Derating Factors for Timing Delays (normalized to TJ = 70°C,
VCC =1.425 V)
For IGLOO nano V2 or V5 Devices, 1.5 V DC Core Supply Voltage
Array Voltage
VCC (V)
Junction Temperature (°C)
–40°C
–20°C
0°C
25°C
70°C
85°C
100°C
1.425
0.947
0.956
0.965
0.978
1.000
1.009
1.013
1.5
0.875
0.883
0.892
0.904
0.925
0.932
0.937
1.575
0.821
0.829
0.837
0.848
0.868
0.875
0.879
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