ADRF6704ACPZ-R7 datasheet(13/36 Pages) AD

13 / 36 page

Data Sheet

ADRF6704

Rev. 0 | Page 13 of 36

–120

–115

–110

–105

–100

–95

–90

–85

–80

–75

–70

2500

2550

2600

2650

2700

2750

2800

2850

2900

LO FREQUENCY (MHz)

2× PFD FREQUENCY

4× PFD FREQUENCY

–40°C

+25°C

+85°C

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

Modulator Output

–120

–115

–110

–105

–100

–95

–90

–85

–80

–75

–70

2500

2550

2600

2650

2700

2750

2800

2850

2900

LO FREQUENCY (MHz)

1× PFD FREQUENCY

3× PFD FREQUENCY

0.5× PFD FREQUENCY

–40°C

+25°C

+85°C

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

2500

2550

2600

2650

2700

2750

2800

2850

2900

LO FREQUENCY (MHz)

–40°C

+25°C

+85°C

Figure 24. VTUNE vs. LO Frequency and Temperature

–120

–115

–110

–105

–100

–95

–90

–85

–80

–75

–70

2500

2550

2600

2650

2700

2750

2800

2850

2900

LO FREQUENCY (MHz)

2× PFD FREQUENCY

4× PFD FREQUENCY

–40°C

+25°C

+85°C

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

Output

LO FREQUENCY (MHz)

–120

–115

–110

–105

–100

–95

–90

–85

–80

–75

–70

2500

2550

2600

2650

2700

2750

2800

2850

2900

0.5× PFD FREQUENCY

1× PFD FREQUENCY

3× PFD FREQUENCY

–40°C

+25°C

+85°C

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

3× PFD) at LO Output

–160

–140

–120

–100

–80

–60

–40

–20

10k

100k

10M

FREQUENCY (Hz)

LO = 2519.9MHz

LO = 2702.7MHz

LO = 2884.7MHz

Figure 27. Open-Loop VCO Phase Noise at 2519.9 MHz, 2702.7 MHz, and

2884.7 MHz

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