OPA855 datasheet(9/35 Pages) TI

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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)

Frequency (Hz)

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0.1

0.2

10M

100M

D507

Gain = 7 V/V

VOUT = 2 VPP

Figure 6-7. Large-Signal Response for 0.1-dB Gain Flatness

Frequency (Hz)

-12

-9

-6

-3

10M

100M

D508

VS = 5 V, VOUT = 2 VPP

VS = 5 V, VOUT = 1 VPP

VS = 3.3 V, VOUT = 1 VPP

Figure 6-8. Large-Signal Frequency Response vs Voltage

Supply

Frequency (Hz)

0.1

100

10M

100M

D509

Gain = 7 V/V

Gain = 20 V/V

Small-Signal Response

Figure 6-9. Closed-Loop Output Impedance vs Frequency

Frequency (Hz)

-15

100k

10M

100M

10G

-45

-90

-135

-180

-225

D510

AOL Magnitude (dB)

AOL Phase (q)

Small-Signal Response

Figure 6-10. Open-Loop Magnitude and Phase vs Frequency

Frequency (Hz)

0.1

10k

100k

10M

100M

100

D511

Voltage Noise

Current Noise

Figure 6-11. Voltage and Current Noise Density vs Frequency

Ambient Temperature (qC)

-40

-20

100

120

140

0.85

0.9

0.95

1.05

1.1

1.15

1.2

D512

Frequency = 10 MHz

Figure 6-12. Voltage Noise Density vs Ambient Temperature

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OPA855-Q1

SBOSA57A – FEBRUARY 2021 – REVISED MARCH 2021

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