AD9625 datasheet(24/74 Pages) AD

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AD9625

Data Sheet

Rev. C | Page 22 of 72

100

6000

1000

ANALOG INPUT FREQUENCY (MHz)

Figure 37. SFDR vs. AIN Frequency at 2.5 GSPS (Input Network in Figure 76

Used <2 GHz, Input Network in Figure 75 used >2 GHz)

4.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

N – 4

N – 6

N – 2

N + 4 N + 6

N + 2

CODE

Figure 38. Input Referred Noise Histogram with 2.5 GSPS

0.5

–0.5

–0.4

–0.3

–0.2

–0.1

0.1

0.2

0.3

0.4

4096

3072

2048

1024

CODES

Figure 39. Differential Nonlinearity (DNL), ±0.3 LSB at 2.5 GSPS

100

6000

1000

ANALOG INPUT FREQUENCY (MHz)

Figure 40. SNRFS vs. AIN Frequency at 2.5 GSPS (Input Network in Figure 76

Used <2 GHz, Input Network in Figure 75 Used >2 GHz)

–120

–100

–80

–60

–40

–20

250

500

750

1000

1250

FREQUENCY (MHz)

2500MSPS

fIN1 = 1808.5MHz AT –7.0dBFS

fIN2 = 1805.5MHz AT –7.0dBFS

SFDR = 75.9dBc

Figure 41. Two Tone FFT Plot at 2.5 GSPS, fIN1 = 1808.5 MHz and

fIN2 = 1805.5 MHz at AIN, −7.0 dBFS (SFDR = 75.9 dBc)

–120

–100

–80

–60

–40

–20

250

500

750

1000

1250

FREQUENCY (MHz)

2500MSPS

fIN1 = 728.5MHz AT –7.0dBFS

fIN2 = 731.5MHz AT –7.0dBFS

SFDR = 79.3dBc

Figure 42. Two Tone FFT Plot at 2.5 GSPS, fIN1 = 728.5 MHz and

fIN2 = 731.5 MHz at AIN, −7.0 dBFS (SFDR = 79.3 dBc)

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