AD9218 datasheet(16/29 Pages) AD

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AD9218

Rev. C | Page 15 of 28

100

120

140

160

180

AIN FREQUENCY (MHz)

H2 1V

H2 2V

H3 2V

2V SINGLE-ENDED DRIVE

1V DIFFERENTIAL DRIVE

SFDR 2V

SFDR 1V

H3 1V

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

032.5

ENCODE = 65MSPS

AIN1 = 28.1MHz AT –7dBFS

AIN2 = 29.1MHz AT –7dBFS

SFDR = –72.9dBFS

Figure 29. Two-Tone Intermodulation Distortion

(28 MHz, 29 MHz; 1 V p-p, FS = 65 MSPS)

Figure 26. Harmonic Distortion (Second and Third) and

SFDR vs. AIN Frequency (FS = 65 MSPS)

AIN FREQUENCY (MHz)

SFDR

THIRD

SECOND

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

020

ENCODE = 40MSPS

AIN1 = 10MHz AT –7dBFS

AIN2 = 11MHz AT –7dBFS

SFDR = 74dBc

Figure 30. Two-Tone Intermodulation Distortion

(10 MHz, 11 MHz; 1 V p-p, FS = 40 MSPS)

Figure 27. Harmonic Distortion (Second and Third) and

SFDR vs. AIN Frequency (1 V p-p, FS = 40 MSPS)

020

100

120

ENCODE RATE (MSPS)

SFDR

SINAD

050

ENCODE RATE (MHz)

SFDR

SNR

SINAD

Figure 31. SINAD and SFDR vs. Encode Rate (A

Figure 28. SINAD and SFDR vs. Encode Rate (AIN = 10.3 MHz, 105 MSPS

Grade) A

= 10.3 MHz, 65 MSPS Grade)

= –0.5 dBFS Differential, 1 V p-p Analog Input Range )

= –0.5 dBFS Differential, 1 V p-p Analog Input Range

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