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ADSP-TS201S
OUTPUT DRIVE CURRENTS
Figure 26
through
Figure 33
the output drivers of the ADSP-TS201S processor. The curves in
these diagrams represent the current drive capability of the out-
put drivers as a function of output voltage over the range of
drive strengths. Typical drive currents for intermediate temper-
atures (such as 85°C) should be obtained from the curves using
linear interpolation. For complete output driver characteristics,
refer to the DSP's IBIS models, available on the Analog Devices
website (www.analog.com).
15.0
12.5
I
OL
10.0
7.5
5.0
V
2.5
V
= 2.38V, +105°C
0
DD_IO
–2.5
V
DD_IO
–5.0
V
= 2.38V, +105°C
DD_IO
–7.5
–10.0
–12.5
–15.0
0
0.4
0.8
OUTPUT PIN VOLTAGE (V)
Figure 26. Typical Drive Currents at Strength 0
30
I
25
OL
20
15
10
V
DD_IO
5
V
= 2.38V, +105°C
0
DD_IO
V
–5
V
= 2.38V, +105°C
–10
DD_IO
–15
–20
–25
–30
0
0.4
0.8
OUTPUT PIN VOLTAGE (V)
Figure 27. Typical Drive Currents at Strength 1
show typical I–V characteristics for
STRENGTH 0
V
= 2.63V, –40°C
DD_IO
= 2.5V, +25°C
DD_IO
V
= 2.63V, –40°C
DD_IO
= 2.5V, +25°C
I
OH
1.2
1.6
2.0
2.4
STRENGTH 1
V
= 2.63V, –40°C
DD_IO
= 2.5V, +25°C
V
= 2.63V, –40°C
DD_IO
= 2.5V, +25°C
DD_IO
I
OH
1.2
1.6
2.0
2.4
Rev. C | Page 36 of 48 | December 2006
45
36
27
18
9
0
–9
V
–18
–27
–36
–45
0
55
44
33
22
11
2.8
0
–11
V
–22
–33
–44
–55
0
70
60
50
40
30
20
10
2.8
0
–10
–20
V
–30
–40
–50
–60
–70
0
STRENGTH 2
I
OL
V
= 2.5V, +25°C
DD_IO
V
V
= 2.38V, +105°C
DD_IO
DD_IO
V
= 2.5V, +25°C
DD_IO
= 2.38V, +105°C
DD_IO
0.4
1.2
1.6
0.8
OUTPUT PIN VOLTAGE (V)
Figure 28. Typical Drive Currents at Strength 2
STRENGTH 3
I
OL
V
= 2.5V, +25°C
DD_IO
V
= 2.38V, +105°C
DD_IO
V
= 2.5V, +25°C
DD_IO
= 2.38V, +105°C
DD_IO
0.4
0.8
1.2
1.6
OUTPUT PIN VOLTAGE (V)
Figure 29. Typical Drive Currents at Strength 3
STRENGTH 4
I
OL
V
= 2.5V, +25°C
DD_IO
V
= 2.38V, +105°C
DD_IO
V
= 2.5V, +25°C
DD_IO
= 2.38V, +105°C
DD_IO
0.4
0.8
1.2
1.6
OUTPUT PIN VOLTAGE (V)
Figure 30. Typical Drive Currents at Strength 4
V
= 2.63V, –40°C
DD_IO
= 2.63V, –40°C
I
OH
2.0
2.4
2.8
V
= 2.63V, –40°C
DD_IO
V
= 2.63V, –40°C
DD_IO
I
OH
2.0
2.4
2.8
V
= 2.63V, –40°C
DD_IO
V
= 2.63V, –40°C
DD_IO
I
OH
2.0
2.4
2.8
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