AD9268 datasheet(23/44 Pages) AD

23 / 44 page

AD9268

Rev. A | Page 23 of 44

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150

200

250

300

INPUT FREQUENCY (MHz)

SNR @ –40°C

SFDR @ –40°C

SNR @ +25°C

SFDR @ +25°C

SNR @ +85°C

SFDR @ +85°C

Figure 44. AD9268-125 Single-Tone SNR/SFDR vs. Input Frequency (fIN)

with 2 V p-p Full Scale

100

150

200

250

300

INPUT FREQUENCY (MHz)

SFDR (dBc)

SNR (dBFS)

Figure 45. AD9268-125 Single-Tone SNR/SFDR vs. Input Frequency (fIN)

with 1 V p-p Full Scale

–20

–40

–60

–80

–100

–120

–90

–78

–66

–54

–42

–30

–18

–6

INPUT AMPLITUDE (dBFS)

SFDR (dBc)

IMD3 (dBc)

SFDR (dBFS)

IMD3 (dBFS)

Figure 46. AD9268-125 Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN)

with fIN1 = 29.1 MHz, fIN2 = 32.1 MHz, fS = 125 MSPS

–20

–40

–60

–80

–100

–120

–90

–78

–66

–54

–42

–30

–18

–6

INPUT AMPLITUDE (dBFS)

SFDR (dBc)

IMD3 (dBc)

SFDR (dBFS)

IMD3 (dBFS)

Figure 47. AD9268-125 Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN)

with fIN1 = 169.1 MHz, fIN2 = 172.1 MHz, fS = 125 MSPS

–20

–40

–60

–80

–100

–120

–140

2030

4050

FREQUENCY (MHz)

125MSPS

29.1MHz @ –7dBFS

32.1MHz @ –7dBFS

SFDR = 89dBc (96dBFS)

Figure 48. AD9268-125 Two-Tone FFT with fIN1 = 29.1 MHz and fIN2 = 32.1 MHz

–20

–40

–60

–80

–100

–120

–140

2030

4050

FREQUENCY (MHz)

125MSPS

169.1MHz @ –7dBFS

172.1MHz @ –7dBFS

SFDR = 81.8dBc (88.8dBFS)

Figure 49. AD9268-125 Two-Tone FFT with fIN1 = 169.1 MHz and

fIN2 = 172.1 MHz

AD9268 Datasheet(PDF) 23 Page - Analog Devices

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