ADSP-BF531/ADSP-BF532
OUTPUT DRIVE CURRENTS
through
show typical current-voltage char-
acteristics for the output drivers of the ADSP-BF531/
ADSP-BF532 processor. The curves represent the current drive
capability of the output drivers as a function of output voltage.
150
V
DDEXT
= 2.75V
V
DDEXT
= 2.50V
V
DDEXT
= 2.25V
150
V
DDEXT
= 2.75V
V
DDEXT
= 2.50V
V
DDEXT
= 2.25V
100
SOURCE
CURRENT (mA)
50
0
V
OH
100
SOURCE
CURRENT (mA)
–50
50
–100
V
OL
0
V
OH
–150
0
0.5
1.0
1.5
2.0
2.5
3.0
SOURCE
VOLTAGE (V)
–50
Figure 31. Drive Current B (V
DDEXT
= 2.5 V)
V
OL
80
60
0
0.5
1.0
1.5
2.0
2.5
3.0
SOURCE
CURRENT (mA)
–100
–150
V
DDEXT
= 1.9V
V
DDEXT
= 1.8V
V
DDEXT
= 1.7V
SOURCE
VOLTAGE (V)
40
20
0
-20
-40
-60
-80
0
Figure 28. Drive Current A (V
DDEXT
= 2.5 V)
80
60
SOURCE
CURRENT (mA)
V
DDEXT
= 1.9V
V
DDEXT
= 1.8V
V
DDEXT
= 1.7V
40
20
0
-20
-40
-60
0.5
1.0
SOURCE
VOLTAGE (V)
1.5
2.0
Figure 32. Drive Current B (V
DDEXT
= 1.8 V)
150
-80
0
0.5
1.0
SOURCE
VOLTAGE (V)
1.5
2.0
100
SOURCE
CURRENT (mA)
V
DDEXT
=
3.65V
V
DDEXT
= 2.95V
V
DDEXT
=
3.30V
Figure 29. Drive Current A (V
DDEXT
= 1.8 V)
150
V
DDEXT
=
3.65V
V
DDEXT
=
3.30V
V
DDEXT
= 2.95V
50
0
V
OH
–50
100
SOURCE
CURRENT (mA)
50
–100
V
OL
0
V
OH
–50
–150
0
0.5
1.0
1.5
2.0
SOURCE
VOLTAGE (V)
2.5
3.0
3.5
–100
Figure 33. Drive Current B (V
DDEXT
= 3.3 V)
V
OL
–150
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
SOURCE
VOLTAGE (V)
Figure 30. Drive Current A (V
DDEXT
= 3.3 V)
Rev. D |
Page 43 of 60 |
August 2006
AD [ ANALOG DEVICES ]
