DS077 Datasheet, PDF (56/108 Pages) Xilinx, Inc – Product Availability

Spartan-IIE FPGA Family: Pinout Tables
R
Package Thermal Characteristics
Table 14 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 14: Spartan-IIE 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
TQ144
TQG144
Device
XC2S50E
XC2S100E
Junction-to-Case
(θ_JC)
5.8
5.3
Junction-to-
Board (θ_JB)
N/A
N/A
Still Air
(0 LFM)
32.3
31.4
250 LFM
25.1
24.4
500 LFM
21.5
20.8
750 LFM
20.1
19.6
Units
°C/Watt
°C/Watt
XC2S50E
7.1
N/A
35.1
25.9
22.9
21.2
°C/Watt
XC2S100E
6.1
PQ208
PQG208
XC2S150E
6.0
XC2S200E
4.6
N/A
34.2
25.2
22.3
20.7
°C/Watt
N/A
34.1
25.2
22.2
20.6
°C/Watt
N/A
32.4
23.9
21.2
19.6
°C/Watt
XC2S300E
4.0
N/A
31.6
23.3
20.6
19.1
°C/Watt
XC2S50E
7.3
17.8
27.4
21.6
20.4
20.0
°C/Watt
XC2S100E
5.8
15.1
25.0
19.5
18.2
17.8
°C/Watt
FT256
XC2S150E
5.7
FTG256 _XC2S200E
3.9
14.8
24.8
19.3
18.0
17.6
°C/Watt
11.4
21.9
16.6
15.2
14.7
°C/Watt
XC2S300E
3.2
10.1
20.8
15.6
14.2
13.7
°C/Watt
XC2S400E
2.5
8.8
19.7
14.5
13.2
12.6
°C/Watt
XC2S100E
8.4
14.9
24.3
19.2
18.1
17.4
°C/Watt
XC2S150E
8.2
14.6
24.1
19.0
17.9
17.1
°C/Watt
FG456
XC2S200E
6.3
FGG456 _XC2S300E
5.6
11.6
21.0
16.1
15.0
14.3
°C/Watt
10.4
19.9
15.1
13.9
13.2
°C/Watt
XC2S400E
3.6
6.5
17.7
11.7
10.5
10.0
°C/Watt
XC2S600E
2.7
5.0
17.3
11.2
10.0
9.5
°C/Watt
FG676
XC2S400E
4.1
FGG676 _XC2S600E
3.4
7.9
15.6
11.1
9.8
9.2
°C/Watt
6.9
14.5
9.9
8.6
7.9
°C/Watt
56
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DS077-4 (2.3) June 18, 2008
Product Specification