ADSP-BF531 / ADSP-BF532 / ADSP-BF533
OUTPUT DRIVE CURRENTS
150
Figure 33 through Figure 44 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.
100
50
V DDEXT = 2.75V
V DDEXT = 2.50V
V DDEXT = 2.25V
150
100
50
V DDEXT = 2.75V
V DDEXT = 2.50V
V DDEXT = 2.25V
0
–50
–100
V OH
V OL
0
V OH
–150
0
0.5
1.0
1.5
2.0
2.5
3.0
–50
–100
V OL
80
SOURCE VOLTAGE (V)
Figure 36. Drive Current B (V DDEXT = 2.5 V)
–150
0
0.5
1.0 1.5
SOURCE VOLTAGE (V)
2.0
2.5
3.0
60
40
V DDEXT = 1.9V
V DDEXT = 1.8V
V DDEXT = 1.7V
Figure 33. Drive Current A (V DDEXT = 2.5 V)
20
80
60
40
V DDEXT = 1.9V
V DDEXT = 1.8V
V DDEXT = 1.7V
0
– 20
– 40
20
– 60
0
– 20
– 80
0
0.5
1.0
1.5
2.0
SOURCE VOLTAGE (V)
– 40
– 60
Figure 37. Drive Current B (V DDEXT = 1.8 V)
– 80
0
0.5
1.0
1.5
2.0
150
SOURCE VOLTAGE (V)
V DDEXT = 3.65V
Figure 34. Drive Current A (V DDEXT = 1.8 V)
100
V DDEXT = 3.30V
V DDEXT = 2.95V
50
150
V DDEXT = 3.65V
V DDEXT = 3.30V
0
100
V DDEXT = 2.95V
V OH
–50
50
–100
0
V OH
–150
V OL
–50
0
0.5
1.0
1.5 2.0
2.5
3.0
3.5
SOURCE VOLTAGE (V)
–100
–150
V OL
Figure 38. Drive Current B (V DDEXT = 3.3 V)
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
SOURCE VOLTAGE (V)
Figure 35. Drive Current A (V DDEXT = 3.3 V)
Rev. I
|
Page 43 of 64 |
August 2013
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