adf7023-j Analog Devices, Inc., adf7023-j Datasheet - Page 25

• Manufacturer Part Number: adf7023-j
• Description: High Performance, Low Power, Ism Band Fsk/gfsk/msk/gmsk Transceiver Ic
• Manufacturer: Analog Devices, Inc.

Figure 41. Mean RSSI Error (via Automatic End of Packet RSSI Measurement)
vs. RF Input Power vs. Data Rate; RF Frequency = 950 MHz, GFSK, 100 RSSI
Figure 43. Temperature Sensor Readback vs. Die Temperature, Readback
Automatic End of Packet RSSI Measurement), 100 RSSI Measurements at
Value Converted to °C via Formula in the Temperature Sensor Section
–100
–110
–120
Figure 42. RSSI With and Without Cosine Polynomial Correction (via
–20
–30
–40
–50
–60
–70
–80
–90
–120 –110 –100
–2
–4
–6
–10
–20
–30
–40
–120 –110 –100
6
4
2
0
90
80
70
60
50
40
30
20
10
0
–40 –30 –20 –10
Measurements at Each Input Power Level
IDEAL RSSI
MEAN RSSI
MEAN RSSI
(WITH POLYNOMIAL CORRECTION)
–90
–90
Each Input Power Level
INPUT POWER (dBm)
0
INPUT POWER (dBm)
MEAN RSSI ERROR
MEAN RSSI ERROR
(WITH POLYNOMIAL CORRECTION)
–80
TEMPERATURE (°C)
–80
10
–70
20
–70
ERROR + 3
ERROR – 3
30
–60
–60
40
–50
–50
50
σ
σ
–40
(°C)
(°C)
–40
60
MEAN (°C)
300kbps
200kbps
150kbps
100kbps
50kbps
38.4kbps
9.6kbps
–30
70
–30
80
–20
–20
10
8
6
4
2
0
–2
–4
–6
–8
–10
90
Rev. 0 | Page 25 of 100
MOD = GFSK (0.5), F
Figure 46. Rx Sensitivity vs. Modulation Index, Data Rate = 100 kbps,
–100
–101
–102
–103
–104
–105
–106
–107
–108
–109
–110
Figure 45. Rx Sensitivity vs. Modulation Index, Data Rate = 50 kbps,
–100
–101
–102
–103
–104
–105
–106
–107
–108
–109
–110
–90
–91
–92
–93
–94
–95
–96
–97
–98
–99
MOD = GFSK, F
–90
–91
–92
–93
–94
–95
–96
–97
–98
–99
Figure 44. Receiver Eye Diagram Measured Using the Test DAC,
–1
1
0
0
0
RF Frequency = 915 MHz, RF Input Power = −80 dBm,
Data Rate = 100 kbps, Frequency Deviation = 50 kHz
0.4
0.2
Bits = 1E + 6, V
Bits = 2E + 5, V
IFBW = 100kHz
IFBW = 200kHz
DISC BW (kHz)
IFBW = 100kHz
IFBW = 200kHz
DISC BW (kHz)
1
0.8
0.4
DEV
2
DEV
= ±(MI × 2 5 kHz), Data = PRBS9, BER = 1E − 3,
1.2
0.6
= ±(MI × 50 kHz), Data = PRBS9, BER = 1E − 3,
MODULATION INDEX
MODULATION INDEX
3
BAT
BAT
SAMPLE NUMBER
1.6
0.8
= 3.0 V, Temperature = 25°C
= 3.0 V, Temperature = 25°C
4
2.0
1.0
5
2.4
1.2
6
2.8
1.4
3.2
1.6
7
ADF7023-J
3.6
1.8
8
4.0
2.0
9
220
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90
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30
20
240
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50
40