AD6688 datasheet(19/138 Pages) AD

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Data Sheet

AD6688

Rev. 0 | Page 19 of 138

–40

–30

–20

–10

100

110

–95 –89 –83 –77 –71 –65 –59 –53 –47 –41 –35 –29 –23 –17 –11 –5 –1

INPUT AMPLITUDE (dBFS)

SNR (dBc)

SNR (dBFS)

SFDR (dBc)

SFDR (dBFS)

Figure 23. SNR/SFDR vs. Input Amplitude, fIN = 950 MHz

–40

–30

–20

–10

100

110

–95 –89 –83 –77 –71 –65 –59 –53 –47 –41 –35 –29 –23 –17 –11 –5 –1

INPUT AMPLITUDE (dBFS)

SNR (dBc)

SNR (dBFS)

SFDR (dBc)

SFDR (dBFS)

Figure 24. SNR/SFDR vs. Input Amplitude, fIN = 1800 MHz

–10 0

10 20 30 40 50 60 70 80 90 100 110 120

TJ (°C)

SNR (dBFS)

SFDR (dBFS)

Figure 25. SNR/SFDR vs. Junction Temperature, fIN = 950 MHz, AIN = −9 dBFS

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

–10 0

10 20 30 40 50 60 70 80 90 100 110 120

TJ (°C)

TOTAL POWER (W)

AVDD1 + AVDD2 + AVDD3 POWER (W)

DVDD + SPIVDD POWER (W)

DRVDD1 + DRVDD2 POWER (W)

Figure 26. Power vs. Junction Temperature, fIN = 950 MHz

–152.0

–151.5

–151.0

–150.5

–150.0

–149.5

–149.0

–148.5

–148.0

255

655

1055 1455 1855 2255 2655 3055 3455 3855

ANALOG INPUT FREQUENCY (MHz)

200mV p-p

500mV p-p

1000mV p-p

1200mV p-p

1500mV p-p

1800mV p-p

2000mV p-p

Figure 27. NSD vs. Analog Input Frequency vs. Various Clock Amplitude in

Differential Voltages, AIN = −9 dBFS

–152.0

–151.5

–151.0

–150.5

–150.0

–149.5

–149.0

–148.5

–148.0

–147.5

–147.0

–146.5

2400

2500

2600

2700

2800

2900

3000

3100

SAMPLE FREQUENCY (MHz)

AIN = –9dBFS

AIN = –2dBFS

Figure 28. NSD vs. Sample Frequency (fS)

fIN = 1.8 GHz; AIN = −2 dBFS

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