ADRF6602

Rev. 0 | Page 10 of 24

Phase noise measurements made at LO output, unless otherwise noted.

1kHz OFFSET

100kHz OFFSET

1MHz OFFSET

10MHz OFFSET

INTERGRATED PHASE NOISE

10kHz OFFSET

–160

–150

–140

–130

–120

–110

–100

–90

–80

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

–

1550

1650

1750

1850

1950

2050

2150

LO FREQUENCY (MHz)

Figure 10. PLL Spot Phase Noise at Various Offsets

and Integrated Phase Noise vs. LO Frequency

0.25× AND

0.5× PFD OFFSET

–110

–105

–100

–95

–90

–85

–80

–75

–70

1550

1650

1750

1850

1950

2050

2150

LO FREQUENCY (MHz)

1× PFD OFFSET

2× PFD OFFSET

4× PFD

OFFSET

Figure 11. PLL Reference Spurs vs. LO Frequency

–160

–150

–140

–130

–120

–110

–100

–90

80

1k

10k

100k

1M

10M

100M

OFFSET FREQUENCY (Hz)

LO = 1558.4MHz

LO = 2134.4MHz

Figure 12. Phase Noise vs. Offset Frequency and LO Frequency

(LO Frequency Varies from 1550 MHz to 2150 MHz)