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)

-110

-100

-90

-80

-70

-60

-50

-40

1M

10M

100M

D015

HD2, RL = 100 :

HD3, RL = 100 :

HD2, RL = 1 k:

HD3, RL = 1 k:

VO = 1 VPP

Figure 6-13. Harmonic Distortion vs Frequency Over RL

Frequency (Hz)

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

1M

10M

100M

D017

HD2, RL = 100 :

HD3, RL = 100 :

HD2, RL = 1 k:

HD3, RL = 1 k:

VO = 2 VPP

Figure 6-14. Harmonic Distortion vs Frequency Over RL

Frequency (Hz)

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

1M

10M

100M

D019

HD2, RL = 100 :

HD3, RL = 100 :

HD2, RL = 1 k:

HD3, RL = 1 k:

VO = 4 VPP

Figure 6-15. Harmonic Distortion vs Frequency Over RL

Frequency (Hz)

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

1M

10M

100M

D025

Max IMD2

Max IMD3

VO = 2 VPP per tone, ±100-kHz tone spacing

Figure 6-16. Inter Modulation Distortion vs Frequency

Frequency (Hz)

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

1M

10M

100M

D021

HD2, G = 7 V/V

HD3, G = 7 V/V

HD2, G = 10 V/V

HD3, G = 10 V/V

VO = 2 VPP, G = 7 V/V and 10 V/V

Figure 6-17. Harmonic Distortion vs Frequency Over Gain

Frequency (Hz)

-120

-110

-100

-90

-80

-70

-60

-50

-40

1M

10M

100M

D022

HD2, G = 20 V/V

HD3, G = 20 V/V

HD2, G = 50 V/V

HD3, G = 50 V/V

VO = 2 VPP, G = 20 V/V and 50 V/V,

flattening HD at higher frequencies due to bandwidth roll-off

Figure 6-18. Harmonic Distortion vs Frequency Over Gain

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OPA818

SBOS940B – MAY 2019 – REVISED DECEMBER 2025

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