ADRF6701 datasheet(13/36 Pages) AD

13 / 36 page

Data Sheet

ADRF6701

Rev. 0 | Page 13 of 36

–120

–110

–100

–90

–80

–70

750

800

850

900

950

1000

1050

1100

1150

LO FREQUENCY (MHz)

TA = –40°C

TA = +25°C

TA = +85°C

2× PFD FREQUENCY

4× PFD FREQUENCY

Figure 22. PLL Reference Spurs vs. LO Frequency (2× PFD and 4× PFD) at

Modulator Output

–120

–110

–100

–90

–80

–70

750

800

850

900

950

1000

1050

1100

1150

LO FREQUENCY (MHz)

TA = –40°C

TA = +25°C

TA = +85°C

1× PFD FREQUENCY

3× PFD FREQUENCY

0.5× PFD FREQUENCY

Figure 23. PLL Reference Spurs vs. LO Frequency (0.5× PFD, 1× PFD,

and 3× PFD) at Modulator Output

1.0

1.2

1.4

1.6

1.8

2.0

2.2

2.4

2.6

2.8

750

800

850

900

950

1000

1050

1100

1150

LO FREQUENCY (MHz)

Figure 24. VTUNE vs. LO Frequency and Temperature

–120

–110

–100

–90

–80

–70

750

800

850

900

950

1000

1050

1100

1150

LO FREQUENCY (MHz)

TA = –40°C

TA = +25°C

TA = +85°C

2× PFD FREQUENCY

4× PFD FREQUENCY

Figure 25. PLL Reference Spurs vs. LO Frequency (2× PFD and 4× PFD) at LO

Output

–120

–110

–100

–90

–80

–70

750

800

850

900

950

1000

1050

1100

1150

LO FREQUENCY (MHz)

0.5× PFD FREQUENCY

TA = –40°C

TA = +25°C

TA = +85°C

1× PFD FREQUENCY

3× PFD FREQUENCY

Figure 26. PLL Reference Spurs vs. LO Frequency (0.5× PFD, 1× PFD, and

3× PFD) at LO Output

–180

–160

–140

–120

–100

–80

–60

–40

–20

10M

100M

10G

FREQUENCY (Hz)

LO = 1118.95MHz

LO = 936.48MHz

LO = 799.79MHz

Figure 27. Open-Loop VCO Phase Noise at 799.79 MHz, 936.48 MHz, and

1118.95 MHz

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