80960CA 查看數據表（PDF） - Intel
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80960CA Datasheet PDF : 62 Pages
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SPECIAL ENVIRONMENT 80960CA-25 -16
3 4 Package Thermal Specifications
The 80960CA is specified for operation when TC
(case temperature) is within the range of b40 C –
a110 C TC may be measured in any environment
to determine whether the 80960CA is within speci-
fied operating range Case temperature should be
measured at the center of the top surface opposite
the pins Refer to Figure 4
TA (ambient temperature) can be calculated from
iCA (thermal resistance from case to ambient) using
the following equation
TA e TC b P iCA
Table 8 shows the maximum TA allowable (without
exceeding TC) at various airflows and operating fre-
quencies (fPCLK)
Note that TA is greatly improved by attaching fins or
a heatsink to the package P (maximum power con-
sumption) is calculated by using the typical ICC as
tabulated in Section 4 4 DC Specifications and
VCC of 5V
271327 – 4
Figure 4 Measuring 80960CA PGA Case Temperature
TA with
Heatsink
TA without
Heatsink
Table 8 Maximum TA at Various Airflows in C
Airflow-ft min (m sec)
fPCLK
0
200
400
600
(MHz)
(0)
(1 01)
(2 03)
(3 04)
33
51
66
79
81
25
61
73
83
85
16
74
82
89
90
33
36
47
59
66
25
49
58
67
73
16
66
72
78
82
800
(4 06)
85
88
92
73
78
86
NOTES
0 285 high undirectional heatsink (Al alloy 6061 50 mil fin width 150 mil center-to-center fin spacing)
1000
(5 07)
87
89
93
75
80
87
19
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