ADSP-21061 Analog Devices, ADSP-21061 Datasheet - Page 41

• Manufacturer Part Number: ADSP-21061
• Description: ADSP-2106x SHARC DSP Microcomputer Family
• Manufacturer: Analog Devices

NOMINAL
–1
9
8
7
6
5
4
3
2
1
0
5
4
3
2
1
0
25
20
50
40
RISE TIME
60
75
LOAD CAPACITANCE – pF
LOAD CAPACITANCE – pF
Y = 0.0391X + 0.36
80
100
FALL TIME
100
Y = 0.0329X –1.65
125
120
Y = 0.0305X + 0.24
140
150
160
175
180
200
200
ENVIRONMENTAL CONDITIONS
Thermal Characteristics
The ADSP-21061KS (5 V) device is packaged in a 240-lead
thermally enhanced MQFP. The top surface of the package
contains a copper slug from which most of the die heat is dissi-
pated. The slug is flush with the top surface of the package.
Note that the copper slug is internally connected to GND
through the device substrate. The ADSP-21061LKS is packaged
in a 240-lead MQFP without a copper heat slug. The ADSP-
21061L is also available in a 225-Ball PBGA package. The
PBGA has a θ
case temperature (T
specification is not exceeded, a heatsink and/or an air flow
source may be used. A heatsink should be attached with a ther-
mal adhesive.
T
PD =
θ
Airflow
(Linear Ft./Min.)
θ
NOTES
This represents thermal resistance at total power of 5 W.
With air flow, no variance is seen in θ
θ
Airflow
(Linear Ft./Min.)
θ
NOTE
With air flow, no variance is seen in θ
Airflow
(Linear Ft./Min.)
θ
NOTE
With air flow, no variance is seen in θ
CA
CA
CA
CA
CA
JC
JC
JC
CASE
at 0 LFM varies with power: at 2W, θ
= 0.3 C/W
= 6.3 C/W
= 1.7 C/W
=
(°C/W)
(°C/W)
(°C/W)
= Case temperature (measured on top surface of package)
Power dissipation in W (this value depends upon the
specific application; a method for calculating PD is
shown under Power Dissipation).
Value from tables below.
ADSP-21061L (3.3 V MQFP Package)
ADSP-21061L (3.3 V PBGA Package)
JC
ADSP-21061 (5 V MQFP Package)
of 1.7°C/W. The ADSP-2106x is specified for a
ADSP-21061/ADSP-21061L
T
CASE
CASE =
0
10
0
19.6
). To ensure that the T
T
0
19.0
AMB
CA
CA
CA
100
9
100
17.6
+ ( PD × θ
with power.
with power.
with power.
CA
= 14°C/W, at 3W θ
200
8
200
200
13.6
15.6
CA
)
CASE
400
7
400
13.9
CA
data sheet
= 11°C/W.
400
11.2
600
6
600
12.2