adf7023-j Analog Devices, Inc., adf7023-j Datasheet - Page 24

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

ADF7023-J
928 MHz, GFSK, Data Rate = 100 kbps, Frequency Deviation = 50 kHz, Packet
200 kHz (at 200 kbps), and 300 kHz (at 300 kbps), Preamble Length = 64 Bits
Figure 36. AFC On: Receiver Sensitivity (at PER = 1%) vs. RF Frequency Error,
Figure 37. AFC Off: Packet Error Rate vs. RF Frequency Error and Data Rate
Error, AFC Off, Data Rate = 300 kbps, Frequency Deviation = 75 kHz, GFSK,
Figure 35. Receiver PER Using Reed Solomon (RS) Coding; RF Frequency =
Preamble, IF Bandwidth = 100 kHz (at 100 kbps), 150 kHz (at 150 kbps),
GFSK, 915 MHz, AFC Enabled (Ki = 7, Kp = 3), AFC Mode = Lock After
Length = 28 Bytes (Uncoded); Reed Solomon Configuration: n = 38,
–0.25
–0.50
–0.75
–1.00
–1.25
–1.50
–1.75
–2.00
–100
–110
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
–10
–20
–30
–40
–50
–60
–70
–80
–90
10
–107
9
8
7
6
5
4
3
2
1
0
0
0
–40
k = 28, t = 5, PML = Preamble Match Level Register
–35
–106
–30
AGC_LOCK_MODE = Lock After Preamble
–25
–105
–20
RF FREQUENCY ERROR (kHz)
RF FREQUENCY ERROR (kHz)
–15
Rx INPUT POWER (dBm)
–104
–10
>1%
–5
–103
100kbps
150kbps
200kbps
300kbps
0
2.1dB
3.5dB
4.1dB
<1%
5
–102
10
CODED, PML = 0x0A,
SYNC. TOL. = 0
CODED, PML = 0x0A,
SYNC. TOL. = 1
CODED, PML = 0x07,
SYNC. TOL. = 2
UNCODED, PML = 0x0A,
SYNC. TOL. = 0
15
–101
20
25
–100
30
35 40
–99
Rev. 0 | Page 24 of 100
Figure 39. RSSI (via CMD_GET_RSSI) vs. RF Input Power, 950 MHz, GFSK, Data
Power, 950 MHz, GFSK, Data Rate = 300 kbps, Frequency Deviation = 75 kHz,
Figure 40. RSSI (via Automatic End of Packet RSSI Measurement) vs. RF Input
IF Bandwidth = 300 kHz, AGC_CLOCK_DIVIDE = 15, 100 RSSI Measurements
Figure 38. AFC On: Packet Error Rate vs. RF Frequency Error and Data Rate
Error, AFC On, Data Rate = 300 kbps, Frequency Deviation = 75 kHz, GFSK,
Rate = 38.4 kbps, Frequency Deviation = 20 kHz, IF Bandwidth = 100 kHz,
–100
–110
–120
–100
–110
–120
–20
–30
–40
–50
–60
–70
–80
–90
–20
–30
–40
–50
–60
–70
–80
–90
–0.25
–0.50
–0.75
–1.00
–1.25
–1.50
–1.75
–2.00
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
–120 –110 –100
–120 –110 –100
–140–120–100 –80 –60 –40 –20
0
100 RSSI Measurements at Each Input Power Level
AGC_LOCK_MODE = Lock After Preamble
IDEAL RSSI
MEAN RSSI
MEAN RSSI ERROR
MAX POSITIVE RSSI ERROR
MAX NEGATIVE RSSI ERROR
–90
–90
at Each Input Power Level
RF FREQUENCY ERROR (kHz)
INPUT POWER (dBm)
INPUT POWER (dBm)
–80
–80
IDEAL RSSI
MEAN RSSI
MEAN RSSI ERROR
MAX POSITIVE RSSI ERROR
MAX NEGATIVE RSSI ERROR
>1%
–70
–70
0
–60
–60
<1%
20 40 60 80 100 120 140
–50
–50
–40
–40
–30
–30
–20
–20
10
8
6
4
2
0
–2
–4
–6
–8
–10
10
8
6
4
2
0
–2
–4
–6
–8
–10