DS001 Datasheet, PDF (71/99 Pages) Xilinx, Inc – Spartan-II FPGA Family

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Spartan-II FPGA Family: Pinout Tables
Package Thermal Characteristics
Table 39 provides the thermal characteristics for the various
Spartan-II FPGA package offerings. This information is also
available using the Thermal Query tool on xilinx.com
(www.xilinx.com/cgi-bin/thermal/thermal.pl).
The junction-to-case thermal resistance (θ_JC) indicates the
difference between the temperature measured on the
package body (case) and the die junction temperature per
watt of power consumption. The junction-to-board (θ_JB)
Table 39: Spartan-II Package Thermal Characteristics
value similarly reports the difference between the board and
junction temperature. The junction-to-ambient (θ_JA) value
reports the temperature difference between the ambient
environment and the junction temperature. The θ_JA value is
reported at different air velocities, measured in linear feet
per minute (LFM). The “Still Air (0 LFM)” column shows the
θ_JA value in a system without a fan. The thermal resistance
drops with increasing air flow.
Junction-to-Ambient (θ_JA)
at Different Air Flows
Package
VQ100
VQG100
Device
XC2S15
XC2S30
Junction-to-Case
(θ_JC)
11.3
10.1
Junction-to-
Board (θ_JB)
N/A
N/A
Still Air
(0 LFM)
44.1
40.7
250 LFM
36.7
33.9
500 LFM
34.2
31.5
750 LFM
33.3
30.8
Units
°C/Watt
°C/Watt
XC2S15
7.3
N/A
38.6
30.0
25.7
24.1
°C/Watt
TQ144
XC2S30
6.7
TQG144
XC2S50
5.8
N/A
34.7
27.0
23.1
21.7
°C/Watt
N/A
32.2
25.1
21.4
20.1
°C/Watt
XC2S100
5.3
N/A
31.4
24.4
20.9
19.6
°C/Watt
CS144
CSG144
XC2S30
2.8
N/A
34.0
26.0
23.9
23.2
°C/Watt
XC2S50
6.7
N/A
25.2
18.6
16.4
15.2
°C/Watt
PQ208
XC2S100
5.9
PQG208
XC2S150
5.0
N/A
24.6
18.1
16.0
14.9
°C/Watt
N/A
23.8
17.6
15.6
14.4
°C/Watt
XC2S200
4.1
N/A
23.0
17.0
15.0
13.9
°C/Watt
XC2S50
7.1
17.6
27.2
21.4
20.3
19.8
°C/Watt
FG256
XC2S100
5.8
FGG256
XC2S150
4.6
15.1
25.1
19.5
18.3
17.8
°C/Watt
12.7
23.0
17.6
16.3
15.8
°C/Watt
XC2S200
3.5
10.7
21.4
16.1
14.7
14.2
°C/Watt
FG456
XC2S150
2.0
FGG456
XC2S200
2.0
N/A
21.9
17.3
15.8
15.2
°C/Watt
N/A
21.0
16.6
15.1
14.5
°C/Watt
DS001-4 (v2.8) June 13, 2008
Product Specification
www.xilinx.com
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