AD9273 datasheet(18/49 Pages) AD

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AD9273

Rev. B | Page 17 of 48

100

125

150

FREQUENCY (MHz)

GAIN+ = 1.6V

GAIN+ = 0.8V

GAIN+ = 0V

Figure 18. Antialiasing Filter (AAF) Group Delay Response

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

INPUT FREQUENCY (MHz)

GAIN+ = 1.6V

GAIN+ = 1.0V

GAIN+ = 0.5V

Figure 19. Second-Order Harmonic Distortion vs. Input Frequency,

AIN = −1.0 dBFS

–80

–70

–60

–50

–40

–30

–20

–10

INPUT FREQUENCY (MHz)

GAIN+ = 1.6V

GAIN+ = 1.0V

GAIN+ = 0.5V

Figure 20. Third-Order Harmonic Distortion vs. Input Frequency,

AIN = −1.0 dBFS

–120

–100

–80

–60

–40

–20

–40

–35

–30

–25

–20

–15

–10

–5

ADC OUTPUT LEVEL (dBFS)

GAIN+ = 1.6V

GAIN+ = 0.8V

GAIN+ = 0V

Figure 21. Second-Order Harmonic Distortion vs. ADC Output Level

–120

–100

–80

–60

–40

–20

–40

–35

–30

–25

–20

–15

–10

–5

ADC OUTPUT LEVEL (dBFS)

GAIN+ = 1.6V

GAIN+ = 0.8V

GAIN+ = 0V

Figure 22. Third-Order Harmonic Distortion vs. ADC Output Level

–90

–80

–70

–60

–50

–40

–30

–20

–10

0.5

0.6

0.7

0.9

1.1

1.3

1.5

0.8

1.0

1.2

1.4

1.6

GAIN+ (V)

fIN1 = fIN2 +0.01MHz

AIN1 = –1dBFS, AIN2 = –21dBFS

8MHz

5MHz

2.3MHz

Figure 23. IMD3 vs. GAIN+

AD9273 Datasheet(PDF) 18 Page - Analog Devices

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