Datasheet
Rev. D | Page 38 of 48 | May 2012
ADSP-TS203S
ENVIRONMENTAL CONDITIONS
The ADSP-TS203S processor is rated for performance under
T
CASE
environmental conditions specified in the Operating
Conditions on Page 20.
Thermal Characteristics
The ADSP-TS203S processor is packaged in a 25 mm × 25 mm,
thermally enhanced ball grid array (BGA_ED). The processor is
specified for a case temperature (T
CASE
). To ensure that the
T
CASE
data sheet specification is not exceeded, a heat sink
and/or an air flow source may be required. Table 34 shows the
thermal characteristics of the BGA_ED package. All parameters
are based on a JESD51-9 four-layer 2s2p board. All data are
based on 3 W power dissipation.
Figure 41. Typical Output Rise and Fall Time (10% to 90%, V
DD_IO
=2.5V)
vs. Load Capacitance at Strength 6
Figure 42. Typical Output Rise and Fall Time (10% to 90%, V
DD_IO
=2.5V)
vs. Load Capacitance at Strength 7
R
I
S
E
A
N
D
F
A
L
L
T
I
M
E
S
(
n
s
)
LOAD CAPACITANCE (pF)
0
10 20 30 40 50 60 70 80 90 100
0
5
10
15
20
25
RISE TIME
Y = 0.0377
x
+0.7449
FALL TIME
Y = 0.0374x + 0.851
STRENGTH 6
(V
DD_IO
=2.5V)
R
I
S
E
A
N
D
F
A
L
L
T
I
M
E
S
(
n
s
)
LOAD CAPACITANCE (pF)
0
10 20 30 40 50 60 70 80 90 100
0
5
10
15
20
25
STRENGTH 7
(V
DD_IO
=2.5V)
RISE TIME
Y = 0.0321
x
+0.6512
FALL TIME
Y = 0.0313x + 0.818
Figure 43. Typical Output Valid (V
DD_IO
= 2.5 V) vs. Load Capacitance at
Max Case Temperature and Strength 0 to 7
1
1
The line equations for the output valid vs. load capacitance are:
Strength 0: y = 0.0956x + 3.5662
Strength 1: y = 0.0523x + 3.2144
Strength 2: y = 0.0433x + 3.1319
Strength 3: y = 0.0391x + 2.9675
Strength 4: y = 0.0393x + 2.7653
Strength 5: y = 0.0373x + 2.6515
Strength 6: y = 0.0379x + 2.1206
Strength 7: y = 0.0399x + 1.9080
Table 34. Thermal Characteristics
Parameter Condition Typical Unit
θ
JA
1
1
θ
JA
measured per JEDEC standard JESD51-6.
Airflow = 0 m/s 12.9
2
2
θ
JA
= 12.9°C/W for 0 m/s is for vertically mounted boards. For horizontally
mounted boards, use 17.0°C/W for 0 m/s.
°C/W
Airflow = 1 m/s 10.2 °C/W
Airflow = 2 m/s 9.0 °C/W
Airflow = 3 m/s 8.0 °C/W
θ
JB
3
3
θ
JB
measured per JEDEC standard JESD51-9.
—7.7°C/W
θ
JC
4
4
θ
JC
measured by cold plate test method (no approved JEDEC standard).
—0.7°C/W
0 102030405060708090100
0
5
10
15
O
U
T
P
U
T
V
A
L
I
D
(
n
s
)
LOAD CAPACITANCE (pF)
1
2
3
4
5
6
7
STRENGTH 0–7
(V
DD_IO
=2.5V)
0