OPA855 datasheet(11/35 Pages) TI

11 / 35 page

6.6 Typical Characteristics (continued)

at TA = 25°C, VS+ = 2.5 V, VS– = –2.5 V, VIN+ = 0 V, RF = 453 Ω, Gain = 7 V/V, RL = 200 Ω, and output load referenced to

midsupply (unless otherwise noted)

Time (5 ns/div)

-60

-40

-20

D519

Input

Output

Average Rise and Fall Time (10% - 90%) = 300 ps

Rise and fall time limited by test equipment

Figure 6-19. Small-Signal Transient Response

Time (5 ns/div)

-1.25

-1

-0.75

-0.5

-0.25

0.25

0.5

0.75

1.25

D520

Input

Output

Average Rise and Fall Time (10% - 90%) = 569 ps

Figure 6-20. Large-Signal Transient Response

Time (5 ns/div)

-75

-50

-25

D521

RS = 16.5 :, C L = 10 pF

RS = 8 :, C L = 47 pF

RS = 5.6 :, C L = 100 pF

RS = 1.6 :, C L = 1 nF

Figure 6-21. Small-Signal Transient Response vs Capacitive

Load

Time (2 ns/div)

-4

-3

-2

-1

D522

Ideal Output

Measured Output

2x Output Overdrive

Figure 6-22. Output Overload Response

Time (5 ns/div)

-3

-2

-1

D523

Power Down ( PD)

Output

Figure 6-23. Turnon Transient Response

Time (5 ns/div)

-3

-2

-1

D524

Power Down ( PD)

Output

Figure 6-24. Turnoff Transient Response

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OPA855-Q1

SBOSA57A – FEBRUARY 2021 – REVISED MARCH 2021

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