ADF5355 datasheet(14/38 Pages) AD

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ADF5355

Data Sheet

Figure 22. Output Power vs. Frequency, RFOUTB (10 pF Bypass Capacitor

De-Embedded)

Figure 23. VCO Feedthrough at RFOUTB (De-Embedded) vs. Fundamental VCO

Frequency

Figure 24. Wideband Spectrum, RFOUTB, VCO = 6.8 GHz, RFOUTB Enabled,

RFOUTA+/RFOUTA− Disabled (Board Measurement)

Figure 25. RMS Jitter vs. Output Frequency, fPFD = 61.44 MHz, Loop Filter = 20 kHz

Figure 26. PFD Spur Amplitude vs. RFOUTA+/RFOUTA− Output Frequency;

fPFD = 61.44 MHz, fPFD = 30.72 MHz, and fPFD = 15.36 MHz; Loop Filter = 20 kHz

Figure 27. Fractional-N Spur Performance, GSM1800 Band, RFOUTA+ =

1550.2 MHz, REFIN = 122.88 MHz, fPFD = 61.44 MHz, Output Divide by 4

Selected, Loop Filter Bandwidth = 2 kHz, Channel Spacing = 20 kHz

FREQUENCY (GHz)

–10

–8

–6

–4

–2

6.7

7.7

8.7

9.7

10.7

11.7

12.7

13.7

–40°C

+25°C

+85°C

–15

–14

–13

–12

–11

–10

–9

–8

–7

–6

–5

–4

–3

–2

–1

3.4

3.9

4.4

4.9

5.4

5.9

6.4

6.9

FREQUENCY (GHz)

–40°C

+25°C

+85°C

FREQUENCY (GHz)

–60

–50

–40

–30

–20

–10

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0.8

1.8

2.8

3.8

4.8

5.8

6.8

OUTPUT FREQUENCY (GHz)

RMS JITTER (ps) 1kHz TO 20MHz

RMS JITTER (ps) 12kHz TO 20MHz

–110

–100

–90

–80

–70

–60

–50

RFOUTA+/RFOUTA– OUTPUT FREQUENCY(GHz)

PFD = 15.36MHz

PFD = 30.72MHz

PFD = 61.44MHz

10k

100k

10M

100M

FREQUENCY OFFSET FROM CARRIER (Hz)

–170

–160

–150

–140

–130

–120

–110

–100

–90

–80

–70

Rev. A | Page 14 of 38

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