ADSP-BF534/ADSP-BF536/ADSP-BF537
OUTPUT DRIVE CURRENTS
Figure 36 through Figure 47 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. See Table 9 on Page 19 for informa-
tion about which driver type corresponds to a particular pin.
120
100
80
60
40
20
0
- 20
- 40
- 60
- 80
- 100
0
VDDEXT = 2.25V @ 95°C
VDDEXT = 2.50V @ 25°C
VDDEXT = 2.75V @ -40°C
VOH
VOL
0.5
1.0
1.5
2.0
2.5
3.0
SOURCE VOLTAGE (V)
Figure 36. Drive Current A (Low VDDEXT)
150
VDDEXT = 3.0V @ 95°C
100
VDDEXT = 3.3V @ 25°C
VDDEXT = 3.6V @ -40°C
50
VOH
0
-50
VOL
-100
-150
0
150
100
50
0
0.5
1.0
1.5
2.0
2.5
3.0
SOURCE VOLTAGE (V)
Figure 37. Drive Current A (High VDDEXT)
3.5
4.0
VDDEXT = 2.25V @ 95°C
VDDEXT = 2.50V @ 25°C
VDDEXT = 2.75V @ -40°C
VOH
-50
VOL
-100
-150
0
0.5
1.0
1.5
2.0
2.5
3.0
SOURCE VOLTAGE (V)
Figure 38. Drive Current B (Low VDDEXT)
200
150
100
50
0
-50
-100
-150
-200
0
VDDEXT = 3.0V @ 95°C
VDDEXT = 3.3V @ 25°C
VDDEXT = 3.6V @ -40°C
VOH
VOL
0.5
1.0
1.5
2.0
2.5
3.0
SOURCE VOLTAGE (V)
Figure 39. Drive Current B (High VDDEXT)
3.5
4.0
80
60
40
20
0
-20
-40
-60
0
VDDEXT = 2.25V @ 95°C
VDDEXT = 2.50V @ 25°C
VDDEXT = 2.75V @ -40°C
VOH
VOL
0.5
1.0
1.5
2.0
2.5
3.0
SOURCE VOLTAGE (V)
Figure 40. Drive Current C (Low VDDEXT)
100
80
60
40
20
0
-20
-40
-60
-80
0
VDDEXT = 3.0V @ 95°C
VDDEXT = 3.3V @ 25°C
VDDEXT = 3.6V @ -40°C
VOH
VOL
0.5
1.0
1.5
2.0
2.5
3.0
SOURCE VOLTAGE (V)
Figure 41. Drive Current C (High VDDEXT)
3.5
4.0
Rev. J | Page 50 of 68 | February 2014