ADSP-21362WBBCZ-1A AD [Analog Devices], ADSP-21362WBBCZ-1A Datasheet - Page 47

• Manufacturer Part Number: ADSP-21362WBBCZ-1A
• Description: SHARC Processor
• Manufacturer: AD [Analog Devices]

THERMAL CHARACTERISTICS
The ADSP-2136x processor is rated for performance over the
temperature range specified in Operating Conditions
on Page
Table 41
JEDEC standards JESD51-2 and JESD51-6 and the junction-to-
board measurement complies with JESD51-8. Test board and
thermal via design comply with JEDEC standards JESD51-9
(BGA). The junction-to-case measurement complies with MIL-
STD-883. All measurements use a 2S2P JEDEC test board.
Industrial applications using the BGA package require thermal
vias, to an embedded ground plane, in the PCB. Refer to JEDEC
standard JESD51-9 for printed circuit board thermal ball land
and thermal via design information.
To determine the junction temperature of the device while on
the application PCB, use:
where:
T
T
package
Ψ
is the typical value from
P
information).
Values of θ
design considerations.
Values of θ
design considerations when an external heat sink is required.
Note that the thermal characteristics values provided in
Table 41
D
J
T
JT
= junction temperature (°C)
= case temperature (°C) measured at the top center of the
= power dissipation (see EE Note No. EE-277 for more
= junction-to-top (of package) characterization parameter
Figure 42. Typical Output Delay or Hold vs. Load Capacitance
- 2
- 4
10
16.
8
4
2
0
6
and
and
0
JA
JC
are provided for package comparison and PCB
are provided for package comparison and PCB
Table 42
Table 42
Y = 0.0488x - 1.5923
T
(at Ambient Temperature)
J
50
airflow measurements comply with
are modeled values.
=
Table
T
ADSP-21362/ADSP-21363/ADSP-21364/ADSP-21365/ADSP-21366
T
+
LOAD CAPACITANCE (pF)
41.
(
Ψ
100
JT
×
P
D
)
150
Rev. A | Page 47 of 52 | December 2006
200
Table 41. Thermal Characteristics for BGA (No thermal vias
in PCB)
Table 42. Thermal Characteristics for BGA (Thermal vias in
PCB)
Parameter
θ
θ
θ
θ
Ψ
Ψ
Ψ
Parameter
θ
θ
θ
θ
Ψ
Ψ
Ψ
JA
JMA
JMA
JC
JA
JMA
JMA
JC
JT
JMT
JMT
JT
JMT
JMT
Condition
Airflow = 0 m/s
Airflow = 1 m/s
Airflow = 2 m/s
Airflow = 0 m/s
Airflow = 1 m/s
Airflow = 2 m/s
Condition
Airflow = 0 m/s
Airflow = 1 m/s
Airflow = 2 m/s
Airflow = 0 m/s
Airflow = 1 m/s
Airflow = 2 m/s
Typical
25.40
21.90
20.90
5.07
0.140
0.330
0.410
Typical
23.40
20.00
19.20
5.00
0.130
0.300
0.360
Unit
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
Unit
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W