AD9271 datasheet(19/61 Pages) AD

19 / 61 page

AD9271

Rev. B | Page 18 of

–15

–10

–5

–25

–20

–30

–35

–40

2.5

5.0

7.5

10.0

12.5

15.0

17.5

20.0

22.5

25.0

FREQUENCY (MHz)

–3dB LINE

(1/3) × 50MSPS

(1/3) × 40MSPS

(1/3) × 25MSPS

Figure 30. Antialiasing Filter (AAF) Pass-Band Response, No HPF Applied

300

100

150

200

250

0.1

100

ANALOG INPUT FREQUENCY (MHz)

VGAIN = 0V

VGAIN = 1.0V

VGAIN = 0.5V

Figure 31. Antialiasing Filter (AAF) Group Delay Response

fIN (MHz)

101214

–85

–80

–75

–70

–65

–60

–55

–50

VGAIN = 0.2V

VGAIN = 0.5V

VGAIN = 1V

Figure 32. Second-Order Harmonic Distortion vs. Frequency, AIN = −0.5 dBFS

fIN (MHz)

101214

–85

–80

–75

–70

–65

–60

–55

–50

VGAIN = 0.2V

VGAIN = 1V

VGAIN = 0.5V

Figure 33. Third-Order Harmonic Distortion vs. Frequency, AIN = −0.5 dBFS

ADC OUTPUT LEVEL (dBFS)

–110

–40

–50

–60

–70

–80

–90

–100

–40

–5

–10

–15

–20

–25

–30

–35

VGAIN = 0V

VGAIN = 0.5V

VGAIN = 1V

Figure 34. Second-Order Harmonic Distortion vs. ADC Output Level

ADC OUTPUT LEVEL (dBFS)

–110

–40

–50

–60

–70

–80

–90

–100

–40

–5

–10

–15

–20

–25

–30

–35

VGAIN = 0V

VGAIN = 0.5V

VGAIN = 1V

Figure 35. Third-Order Harmonic Distortion vs. ADC Output Level

AD9271 Datasheet(PDF) 19 Page - Analog Devices

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