adsp-bf548 Analog Devices, Inc., adsp-bf548 Datasheet - Page 73

• Manufacturer Part Number: adsp-bf548
• Description: Blackfin Embedded Processor
• Manufacturer: Analog Devices, Inc.

OUTPUT DRIVE CURRENTS
Figure 41
acteristics for the output drivers of the ADSP-BF54x Blackfin
processors. The curves represent the current drive capability of
the output drivers as a function of output voltage.
-100
100
-100
-150
-20
-40
-60
-80
-100
-150
150
100
150
100
80
60
40
20
-50
-50
0
50
50
0
0
0
0
0
VOL
VOL
through
VOL
0.5
0.5
0.5
Figure 42. Drive Current A (High V
Figure 41. Drive Current A (Low V
Figure 43. Drive Current B (Low V
Figure 49
2.7V, +105
1
2.25V, +105
2.25V, +105
2.25V, +105
2.25V, +105
2.7V, +105
1
1
o
1.5
ADSP-BF542/ADSP-BF544/ADSP-BF547/ADSP-BF548/ADSP-BF549
SOURCE VOLTAGE (V)
C
o
SOURCE VOLTAGE (V)
o
C
o
o
C
C
C
o
C
SOURCE VOLTAGE (V)
show typical current-voltage char-
2.5V, +25
2.5V, +25
1.5
2.5V, +25
3.3V, +25
3.3V, +25
2.5V, +25
2
1.5
o
o
C
C
o
o
o
C
C
C
o
C
2.5
2.75V, -40
2.75V, -40
2
3.6V, -40
2.75V, -40
2.75V, -40
3.6V, -40
2
DDEXT
DDEXT
DDEXT
o
o
o
C
C
C
3
o
o
C
o
C
)
C
)
)
2.5
VOH
Rev. A | Page 73 of 88 | October 2008
3.5
VOH
2.5
VOH
3
4
3
-100
-20
-40
-60
-80
100
-100
-150
-200
-250
60
40
20
-20
-40
-60
-80
200
150
100
80
60
40
20
-50
0
50
0
0
0
0
0
VOL
VOL
VOL
0.5
0.5
0.5
Figure 46. Drive Current C (High V
Figure 44. Drive Current B (High V
Figure 45. Drive Current C (Low V
2.7V, +105
2.7V, +105
2.25V, +105
2.25V, +105
2.7V, +105
1
1
2.7V, +105
1
o
C
o
C
o
o
C
C
o
1.5
1.5
C
SOURCE VOLTAGE (V)
o
OUTPUT VOLTAGE (V)
C
3.3V, +25
SOURCE VOLTAGE (V)
2.5V, +25
3.3V, +25
3.3V, +25
2.5V, +25
3.3V, +25
1.5
o
C
2
o
2
C
o
o
C
C
o
C
o
C
3.6V, -40
3.6V, -40
2.75V, -40
3.6V, -40
2.75V, -40
2.5
2.5
3.6V, -40
2
o
C
o
C
o
o
C
C
DDEXT
DDEXT
o
DDEXT
o
C
C
3
3
VOH
)
)
)
2.5
VOH
VOH
3.5
3.5
3
4
4