5.9 Typical Characteristics (continued)

at TA = 25°C, VS = 5.0 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF (unless otherwise noted)

Frequency (Hz)

-40

-90

-20

-60

0

-30

20

0

40

30

60

60

80

90

100

120

120

150

140

180

10m 100m

1

10

100

1k

10k

100k

1M

10M

Gain

Phase

RL = no load

Figure 5-7. Open-Loop Gain and Phase vs Frequency

Frequency (Hz)

-20

-10

0

10

20

30

100

1k

10k

100k

1M

10M

C003

G = 1

G = 1

G = 10

Figure 5-8. Closed-Loop Gain and Phase vs Frequency

Common-mode Voltage (V)

-1

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

1

-50

-40

-30

-20

-10

0

10

20

30

40

50

C051

IB-

IB+

IOS

VS = 1.7 V, common-mode voltage referenced to VS / 2

Figure 5-9. Input Bias Current vs Common-Mode Voltage

Common-mode Voltage (V)

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

-100

-75

-50

-25

0

25

50

75

100

C052

IB-

IB+

IOS

VS = 3.3 V, common-mode voltage referenced to VS / 2

Figure 5-10. Input Bias Current vs Common-Mode Voltage

Common-mode Voltage (V)

-3

-2

-1

0

1

2

3

-100

-75

-50

-25

0

25

50

75

100

C019

IB-

IB+

IOS

VS = 5.5 V, common-mode voltage referenced to VS / 2

Figure 5-11. Input Bias Current vs Common-Mode Voltage

Common-mode Voltage (V)

-3

-2

-1

0

1

2

3

-500

0

500

1000

1500

2000

2500

C018

IB-

IB+

IOS

VS = 5.5 V, common-mode voltage referenced to VS / 2

Figure 5-12. Input Bias Current vs Common-Mode Voltage

OPA391, OPA2391, OPA4391

SBOS925D – DECEMBER 2020 – REVISED APRIL 2024

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