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ADRF6806ACPZ-R7 Scheda tecnica(PDF) 12 Page - Analog Devices

Il numero della parte ADRF6806ACPZ-R7
Spiegazioni elettronici  50 MHz to 525 MHz Quadrature Demodulator with Fractional-N PLL and VCO
PDF  36 Pages
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

ADRF6806ACPZ-R7 Scheda tecnica(HTML) 12 Page - Analog Devices

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ADRF6806
Data Sheet
Rev. B | Page 12 of 36
SYNTHESIZER/PLL
VS1 = 5 V, VS2 = 3.3 V, see the Register Structure section for recommended settings used. External loop filter bandwidth of ~67 kHz, fREF =
fPFD = 26 MHz, measured at BB output, fBB = 50 MHz, unless otherwise noted.
–160
–150
–140
–130
–120
–110
–100
–90
–80
1k
10k
100k
1M
10M
OFFSET FREQUENCY (Hz)
2.5kHz LOOP FILTER
67kHz LOOP FILTER
T=‐
TA = +85°C
TA = +25°C
TA = –40°C
Figure 21. Phase Noise vs. Offset Frequency, fLO = 140 MHz
–110
–105
–100
–95
–90
–85
–80
–75
–70
LO FREQUENCY (MHz)
1× PFD FREQUENCY
3× PFD FREQUENCY
0.5× PFD FREQUENCY
TA = +85°C
TA = +25°C
TA = –40°C
Figure 22. PLL Reference Spurs vs. LO Frequency
–110
–105
–100
–95
–90
–85
–80
–75
–70
LO FREQUENCY (MHz)
2× PFD FREQUENCY
4× PFD FREQUENCY
TA = +85°C
TA = +25°C
TA = –40°C
Figure 23. PLL Reference Spurs vs. LO Frequency
0
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
50
100
150
200
250
300
350
400
450
500
LO FREQUENCY (MHz)
TA = +85°C
TA = +25°C
TA = –40°C
Figure 24. Integrated Phase Noise vs. LO Frequency (Spurs Omitted)
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
40
90
140
190
240
290
340
390
440
490
LO FREQUENCY (MHz)
5MHz OFFSET
10kHz OFFSET
1kHz OFFSET
67kHz LOOP FILTER BANDWIDTH
2.5kHz LOOP FILTER BANDWIDTH
TA = +85°C
TA = +25°C
TA = –40°C
Figure 25. Phase Noise vs. LO Frequency (1 kHz, 10 kHz, and 5 MHz Offsets)
TA = +85°C
TA = +25°C
TA = –40°C
–160
–150
–140
–130
–120
–110
–100
–90
–80
40
90
140
190
240
290
340
390
440
490
LO FREQUENCY (MHz)
1MHz OFFSET
100kHz OFFSET
67kHz LOOP FILTER BANDWIDTH
2.5kHz LOOP FILTER BANDWIDTH
Figure 26. Phase Noise vs. LO Frequency (100 kHz and 1 MHz Offsets)



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