Data Sheet

ADA4938-1/ADA4938-2

Rev. B | Page 11 of 26

1

10

100

1000

6

–12

–9

–6

–3

3

0

FREQUENCY (MHz)

G = +1

G = +2

G = +3.16

G = +5

Figure 19. Small Signal Frequency Response for Various Gains, RF = 402 Ω,

VS = 5 V, VOUT = 0.1 V p-p

3

–12

–9

–6

–3

0

1

10

100

1000

FREQUENCY (MHz)

VS = +5V

VS = ±5V

Figure 20. VOUT, cm Small Signal Frequency Response, VOUT = 0.1 V p-p

1

10

100

1000

1.0

–1.0

–0.9

–0.8

–0.7

–0.6

–0.5

–0.4

–0.3

–0.2

–0.1

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

FREQUENCY (MHz)

RL, dm = 1kΩ

RL, dm = 100Ω

RL, dm = 200Ω

Figure 21. 0.1 dB Flatness Response for Various Loads, ADA4938-1,

VOUT = 0.1 V p-p

1

10

100

1000

6

3

0

–3

–6

–9

–12

FREQUENCY (MHz)

G = +1

G = +2

G = +3.16

G = +5

Figure 22. Large Signal Frequency Response for Various Gains, RF = 402 Ω,

VS = 5 V

3

–12

–9

–6

–3

0

1

10

100

1000

FREQUENCY (MHz)

VS = +5V

VS = ±5V

Figure 23. VOUT, cm Large Signal Frequency Response

1

10

100

1000

1.5

1.4

1.3

1.2

–0.5

–0.4

–0.3

–0.2

–0.1

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

FREQUENCY (MHz)

RL, dm = 1kΩ

RL, dm = 100Ω

RL, dm = 200Ω

Figure 24. 0.1 dB Flatness Response for Various Loads, ADA4938-2,

VOUT = 0.1 V p-p