ADF7023BCPZ View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
ADF7023BCPZ Datasheet PDF : 112 Pages
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Data Sheet
100
75
50
25
0
–25
–50
–75
–100
0
0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00
TRANSMIT SYMBOL (Bits)
Figure 23. Transmit Eye at 868 MHz, GFSK, Data Rate = 300 kbps, Frequency
Deviation = 75 kHz
20
10
0
–10
–20
–30
–40
–50
–60
–2.5 –2.0 –1.5 –1.0 –0.5 0 0.5 1.0 1.5 2.0 2.5
FREQUENCY OFFSET (MHz)
Figure 24. OOK Transmit Spectrum, Max Hold for 100 Sweeps, Single-Ended
PA, 868.95 MHz, Data Rate = 16.4 kbps (32.8 kcps, Manchester Encoded),
PA_RAMP = 1
34
33
RF FREQUENCY = 868MHz
RF FREQUENCY = 928MHz
32
31
30
29
28
27
26
25
130kHz
24
SYNTH
BANDWIDTH
23
174kHz
SYNTH
BANDWIDTH
223kHz
SYNTH
BANDWIDTH
304kHz
SYNTH
BANDWIDTH
381kHz
SYNTH
BANDWIDTH
22
10.0 49.5 49.6 129.5 129.6 179.1 179.2 239.9 240.0 300.0
DATA RATE (kbps)
Figure 25. Modulation Error Ratio (MER) vs. Data Rate, Synthesizer Loop
Bandwidth, and RF Frequency at Modulation Index = 1
ADF7023
32
+25°C, 1.8V
31
+85°C, 1.8V
–40°C, 1.8V
30
+25°C, 3.6V
+85°C, 3.6V
29
–40°C, 3.6V
28
27
26
25
24
23
860 870 880 890 900 910 920 930 940
RF TRANSMIT FREQUENCY (MHz)
Figure 26. Modulation Error Ratio (MER) vs. RF Frequency, Temperature, and
VDD at Modulation Index = 1 and Data Rate = 10 kbps (Minimum
Recommended VDD = 2.2 V, 1.8 V Operation Shown for Robustness)
30
29
RF FREQUENCY = 868MHz
RF FREQUENCY = 928MHz
28
27
26
25
24
23
22
21
20
19
130kHz
18
SYNTH
BANDWIDTH
17
16
10.0 49.5
174kHz
SYNTH
BANDWIDTH
223kHz
SYNTH
BANDWIDTH
304kHz
SYNTH
BANDWIDTH
381kHz
SYNTH
BANDWIDTH
49.6 129.5 129.6 179.1 179.2 239.9 240.0 300.0
DATA RATE (kbps)
Figure 27. Modulation Error Ratio (MER) vs. Data Rate, Synthesizer Loop
Bandwidth, and RF Frequency at Modulation Index = 0.5
32
+25°C, 1.8V
31
+85°C, 1.8V
–40°C, 1.8V
30
+25°C, 3.6V
+85°C, 3.6V
29
–40°C, 3.6V
28
27
26
25
24
23
860 870 880 890 900 910 920 930 940
RF TRANSMIT FREQUENCY (MHz)
Figure 28. Modulation Error Ratio (MER) vs. RF Frequency, Temperature, and
VDD at Modulation Index = 0.5 and Data Rate = 10 kbps
Rev. C | Page 23 of 112
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