6.6 Typical Characteristics: VS = ±5 V (continued)

at TA ≅ 25°C, VS+ = +5 V, VS– = –5 V, closed-loop gain (G) = 7 V/V, VCM = midsupply, RF = 301 Ω, RL = 100 Ω to midsupply,

small-signal VO = 100 mVPP, and large-signal VO = 2 VPP (unless otherwise noted)

Frequency (Hz)

1

10

50

100

1k

10k

100k

1M

D026

Figure 6-19. Voltage Noise Density vs Frequency

Frequency (Hz)

1

10

100

1000

4000

4000

10k

100k

1M

10M

100M

D101

Common-mode noise

Simulation

Figure 6-20. Current Noise Density vs Frequency

Frequency (Hz)

0

-180

8

-165

16

-150

24

-135

32

-120

40

-105

48

-90

56

-75

64

-60

72

-45

80

-30

88

-15

96

0

104

15

1k

10k

100k

1M

10M

100M

1G

D027

AOL Magnitude (dB)

AOL Phase (q)

Simulation

Figure 6-21. Open-Loop Gain Magnitude and Phase vs

Frequency

Frequency (Hz)

1

0.01

10

0.1

100

1

1000

10

2000

20

1k

10k

100k

1M

10M

100M

1G

D102

ZOL

ZCL

Simulation

Figure 6-22. Open-Loop and Closed-Loop Output Impedance vs

Frequency

Output Voltage (V)

-4

-3

-2

-1

0

1

2

3

4

50

55

60

65

70

75

80

85

90

95

100

105

110

115

D055

TA = 40qC

TA = 25qC

TA = 70qC

TA = 85qC

Figure 6-23. DC Open-Loop Gain vs Output Voltage

Output Current (mA)

-75

-60

-45

-30

-15

0

15

30

45

60

75

-1000

-800

-600

-400

-200

0

200

400

600

800

1000

D044

15 units

Figure 6-24. Input Offset Voltage vs Output Current

OPA818

SBOS940B – MAY 2019 – REVISED DECEMBER 2025

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