ADRF6750 Analog Devices, Inc., ADRF6750 Datasheet - Page 13

• Manufacturer Part Number: ADRF6750
• Description: 950 Mhz To 1575 Mhz Quadrature Modulator With Integrated Fractional-n Pll And Vco
• Manufacturer: Analog Devices, Inc.

–10
–15
–20
–25
–30
10
20
30
40
50
60
70
80
90
–5
–1
–2
–3
–4
–5
Figure 24. Output Return Loss at Worst-Case Attenuation vs.
0
0
1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205
1
0
500
1
Figure 25. RF Output Spectral Plot over a 10 MHz Span
Figure 23. Normalized I and Q Input Bandwidth
LO Frequency, Supply, and Temperature
750
SIDEBAND
I AND Q BASEBAND INPUT FREQUENCY (Hz)
LOWER
ATTENUATION = 21dB AND 47dB
OUTPUT FREQUENCY (MHz)
ATTENUATION = 0dB
1000
10M
LO FREQUENCY (MHz)
FEEDTHROUGH
1250
CARRIER
1500
HARMONIC
100M
SECOND
SUPPRESSED
SIDEBAND
1750
HARMONIC
THIRD
2000
1G
Rev. 0 | Page 13 of 40
–100
–110
–120
–130
–140
–150
–160
–10
–20
–30
–40
–50
–60
–70
–80
–90
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
Figure 28. Phase Noise Performance vs. LO Frequency, Supply,
0
0
1150
100
Figure 26. RF Output Spectral Plot over a 100 MHz Span
0
Figure 27. RF Output Spectral Plot over a Wide Span
1
SECOND HARMONICS
LOWER AND UPPER
LOWER
SIDEBAND
HARMONIC
1k
1170
2 × LO
2
HARMONIC
OFFSET FREQUENCY (Hz)
3
10k
3 × LO
and Temperature
LO FREQUENCY (MHz)
SIDEBAND
LOWER
FREQUENCY (MHz)
1190
HARMONIC
4
4 × LO
100k
5
1210
FEEDTHROUGH
6
HARMONIC
SUPPRESSED
CARRIER
1M
SIDEBAND
5 × LO
HARMONIC
7
THIRD
1230
ADRF6750
8
10M
HARMONIC
8 × LO
9
1250
100M
10