ADSP-TS201S
OUTPUT DRIVE CURRENTS
Figure 25 through Figure 32 show typical I–V characteristics for the output drivers of the ADSP-TS201S processor. The curves in these diagrams represent the current drive capability of the output drivers as a function of output voltage over the range of drive strengths. Typical drive currents for intermediate temperatures (such as 85°C) should be obtained from the curves using linear interpolation. For complete output driver characteristics, refer to the DSP’s IBIS models, available on the Analog Devices website (www.analog.com).
STRENGTH 0
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15.0 |
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12.5 |
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IOL |
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10.0 |
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7.5 |
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VDD_IO = 2.63V, –40°C |
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mA |
5.0 |
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VDD_IO = 2.5V, +25°C |
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2.5 |
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– |
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VDD_IO = 2.63V, –40°C |
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NT |
0 |
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VDD_IO = 2.38V, +105°C |
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RE |
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UR |
–2.5 |
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VDD_IO = 2.5V, +25°C |
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INC |
–5.0 |
VDD_IO = 2.38V, +105°C |
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P |
–7.5 |
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UT |
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OUTP |
–10.0 |
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IOH |
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–12.5 |
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–15.0 |
0 |
0.4 |
0.8 |
1.2 |
1.6 |
2.0 |
2.4 |
2.8 |
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OUTPUT PIN VOLTAGE – V |
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Figure 25. Typical Drive Currents at Strength 0
STRENGTH 1
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30 |
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25 |
IOL |
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20 |
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–mA |
15 |
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VDD_IO = 2.63V, –40°C |
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10 |
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VDD_IO = 2.5V, +25°C |
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NT |
5 |
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VDD_IO = 2.63V, –40°C |
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RE |
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VDD_IO = 2.38V, +105°C |
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UR |
0 |
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NC |
–5 |
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VDD_IO = 2.5V, +25°C |
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PI |
–10 |
VDD_IO = 2.38V, +105°C |
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PUT |
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–15 |
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T |
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OU |
–20 |
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–25 |
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IOH |
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–30 |
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0 |
0.4 |
0.8 |
1.2 |
1.6 |
2.0 |
2.4 |
2.8 |
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OUTPUT PIN VOLTAGE – V |
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Figure 26. Typical Drive Currents at Strength 1
STRENGTH 2
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45 |
IOL |
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36 |
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27 |
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mA |
18 |
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VDD_IO = 2.5V, +25°C |
VDD_IO = 2.63V, –40°C |
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– |
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CURRENT |
9 |
VDD_IO = 2.38V, +105°C |
VDD_IO = 2.63V, –40°C |
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0 |
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–9 |
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VDD_IO = 2.5V, +25°C |
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PIN |
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VDD_IO |
= 2.38V, +105°C |
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OUTPUT |
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–18 |
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–27 |
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IOH |
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–36 |
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–45 |
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0 |
0.4 |
0.8 |
1.2 |
1.6 |
2.0 |
2.4 |
2.8 |
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OUTPUT PIN VOLTAGE – V |
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Figure 27. Typical Drive Currents at Strength 2
STRENGTH 3
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55 |
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44 |
IOL |
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–mA |
33 |
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VDD_IO = 2.63V, –40°C |
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22 |
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VDD_IO = 2.5V, +25°C |
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CURRENT |
11 |
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VDD_IO = 2.63V, –40°C |
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0 |
VDD_IO = 2.38V, +105°C |
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PIN |
–11 |
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VDD_IO = 2.5V, +25°C |
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OUTPUT |
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–22 |
VDD_IO = 2.38V, +105°C |
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–33 |
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–44 |
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IOH |
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–55 |
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0 |
0.4 |
0.8 |
1.2 |
1.6 |
2.0 |
2.4 |
2.8 |
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OUTPUT PIN VOLTAGE – V |
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Figure 28. Typical Drive Currents at Strength 3
STRENGTH 4
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70 |
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60 |
IOL |
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50 |
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mA |
40 |
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30 |
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VDD_IO = 2.63V, –40°C |
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– |
20 |
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VDD_IO = 2.5V, +25°C |
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CURRENT |
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10 |
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VDD_IO = 2.63V, –40°C |
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0 |
VDD_IO = 2.38V, +105°C |
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–10 |
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VDD_IO = 2.5V, +25°C |
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PIN |
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–20 |
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OUTPUT |
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–30 |
VDD_IO = 2.38V, +105°C |
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–40 |
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–50 |
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–60 |
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IOH |
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–70 |
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0 |
0.4 |
0.8 |
1.2 |
1.6 |
2.0 |
2.4 |
2.8 |
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OUTPUT PIN VOLTAGE – V |
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Figure 29. Typical Drive Currents at Strength 4
Rev. 0 | Page 35 of 44 | November 2004