ADSP-BF542/ADSP-BF544/ADSP-BF547/ADSP-BF548/ADSP-BF549
OUTPUT DRIVE CURRENTS
200
VOH
2.7V, +105°C
150
Figure 61 through Figure 70 show typical current-voltage char-
3.3V, +25°C
3.6V, –40°C
acteristics for the output drivers of the ADSP-BF54x Blackfin
100
processors. The curves represent the current drive capability of
50
the output drivers as a function of output voltage.
0
–50
–100
100
80
VOH
2.7V, +105°C
–150
–200
–250
2.25V, +105°C
60
40
VOL
2.5V, +25°C
3.3V, +25°C
2.0
3.6V, –40°C
2.5 3.0
2.75V, –40°C
20
0
0.5
1.0
1.5
3.5
4.0
SOURCE VOLTAGE (V)
0
–20
–40
–60
–80
–100
Figure 64. Drive Current B (High VDDEXT)
VOL
60
40
2.25V, +105°C
2.5V, +25°C
VOH
2.75V, –40°C
2.25V, +105°C
2.5V, +25°C
2.75V, –40°C
2.0 2.5
SOURCE VOLTAGE (V)
0
0.5
1.0
1.5
3.0
20
0
Figure 61. Drive Current A (Low VDDEXT
)
–20
–40
–60
–80
150
100
50
2.25V, +105°C
2.5V, +25°C
2.7V, +105°C
3.3V, +25°C
VOL
VOH
3.6V, –40°C
2.75V, –40°C
0
0.5
1.0
1.5
2.0
2.5
3.0
SOURCE VOLTAGE (V)
0
Figure 65. Drive Current C (Low VDDEXT
)
–50
–100
–150
2.7V, +105°C
3.3V, +25°C
VOL
80
60
2.7V, +105°C
3.3V, +25°C
VOH
3.6V, –40°C
3.6V, –40°C
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
40
SOURCE VOLTAGE (V)
20
Figure 62. Drive Current A (High VDDEXT
)
0
–20
–40
–60
–80
–100
150
100
50
2.25V, +105°C
2.5V, +25°C
VOH
2.7V, +105°C
VOL
2.75V, –40°C
3.3V, +25°C
3.6V, –40°C
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
OUTPUT VOLTAGE (V)
0
Figure 66. Drive Current C (High VDDEXT
)
–50
–100
–150
2.25V, +105°C
2.5V, +25°C
VOL
2.75V, –40°C
2.0
0
0.5
1.0
1.5
2.5
3.0
SOURCE VOLTAGE (V)
Figure 63. Drive Current B (Low VDDEXT
)
Rev. C
|
Page 86 of 100
|
February 2010
ADI [ ADI ]
