Data Sheet
Page 13
RFM69HCW
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FSTEP
Frequency synthesizer step
FSTEP = FXOSC/2
19
- 61.0 -
Hz
FRC RC Oscillator frequency After calibration - 62.5 - kHz
BRF Bit rate, FSK Programmable 1.2 - 300 kbps
BRO Bit rate, OOK Programmable 1.2 - 32.768 kbps
FDA Frequency deviation, FSK Programmable
FDA + BRF/2 =< 500 kHz
0.6 - 300 kHz
2.3.3. Receiver
All receiver tests are performed with RxBw = 10 kHz (Single Side Bandwidth) as programmed in RegRxBw, receiving a
PN15 sequence with a BER of 0.1% (Bit Synchronizer is enabled), unless otherwise specified. The LNA impedance is set
to 200 Ohms, by setting bit LnaZin in RegLna to 1. Blocking tests are performed with an unmodulated interferer. The
wanted signal power for the Blocking Immunity, ACR, IIP2, IIP3 and AMR tests is set 3 dB above the nominal sensitivity
level.
Table 6 Receiver Specification
Symbol
Description
Conditions
Min
Typ
Max
Unit
FDA = 5 kHz, BR = 1.2 kb/s
FDA = 5 kHz, BR = 4.8 kb/s
FDA = 40 kHz, BR = 38.4 kb/s
-
-
-
-118
-114
-105
-
-
-
dBm
dBm
dBm
RFS_F
FSK sensitivity, highest LNA gain
FDA = 5 kHz, BR = 1.2 kb/s *
- -120 - dBm
RFS_O OOK sensitivity, highest LNA gain
BR = 4.8 kb/s
- -112 -109 dBm
CCR Co-Channel Rejection
-13 -10 - dB
ACR Adjacent Channel Rejection
Offset = +/- 25 kHz
Offset = +/- 50 kHz
-
37
42
42
-
-
dB
dB
Blocking Immunity
Offset = +/- 1 MHz
Offset = +/- 2 MHz
Offset = +/- 10 MHz
-
-
-
66
71
79
-
-
-
dB
dB
dB
BI
Blocking Immunity
Wanted signal at sensitivity
+16dB
Offset = +/- 1 MHz
Offset = +/- 2 MHz
Offset = +/- 10 MHz
-
-
-
62
65
73
-
-
-
dB
dB
dB
AMR AM Rejection , AM modulated
interferer with 100% modulation
depth, fm = 1 kHz, square
Offset = +/- 1 MHz
Offset = +/- 2 MHz
Offset = +/- 10 MHz
-
-
-
66
71
79
-
-
-
dB
dB
dB
IIP2 2nd order Input Intercept Point
Unwanted tones are 20 MHz
above the LO
Lowest LNA gain
Highest LNA gain
-
-
+75
+35
-
-
dBm
dBm