ADSP-BF531/ADSP-BF532/ADSP-BF533
OUTPUT DRIVE CURRENTS
150
100
50
Figure 32 through Figure 43 show typical current-voltage char-
acteristics for the output drivers of the processors. The curves
represent the current drive capability of the output drivers as a
function of output voltage.
VDDEXT = 2.75V
VDDEXT = 2.50V
VDDEXT = 2.25V
150
0
–50
VOH
VDDEXT = 2.75V
VDDEXT = 2.50V
VDDEXT = 2.25V
100
50
–100
–150
VOL
0
VOH
0
0.5
1.0
1.5
2.0
2.5
3.0
SOURCE VOLTAGE (V)
–50
Figure 35. Drive Current B (VDDEXT = 2.5 V)
VOL
–100
80
60
–150
VDDEXT = 1.9V
VDDEXT = 1.8V
0
0.5
1.0
1.5
2.0
2.5
3.0
SOURCE VOLTAGE (V)
VDDEXT = 1.7V
40
Figure 32. Drive Current A (VDDEXT = 2.5 V)
20
80
60
0
V
DDEXT = 1.9V
VDDEXT = 1.8V
–20
–40
–60
VDDEXT = 1.7V
40
20
0
–80
0
0.5
1.0
1.5
2.0
–20
–40
–60
–80
SOURCE VOLTAGE (V)
Figure 36. Drive Current B (VDDEXT = 1.8 V)
150
100
50
0
0.5
1.0
1.5
2.0
V
DDEXT = 3.65V
VDDEXT = 3.30V
DDEXT = 2.95V
SOURCE VOLTAGE (V)
V
Figure 33. Drive Current A (VDDEXT = 1.8 V)
150
VDDEXT = 3.65V
VDDEXT = 3.30V
VDDEXT = 2.95V
0
100
50
VOH
–50
–100
0
VOL
VOH
–150
0
–50
–100
–150
0.5
1.0
1.5
2.0
2.5
3.0
3.5
SOURCE VOLTAGE (V)
VOL
Figure 37. Drive Current B (VDDEXT = 3.3 V)
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
SOURCE VOLTAGE (V)
Figure 34. Drive Current A (VDDEXT = 3.3 V)
Rev. H
| Page 44 of 64 | January 2011
ROCHESTER [ Rochester Electronics ]
