Rainbow Electronics RFM02 - Manual (Page 4)

RFM02
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DC Characteristics：
symbol parameter conditions/notes min typ max unit
f
ref
PLL reference frequency Parallel fundamental 9 10 11 MHz
f
o
Output frequency
（ f
ref
=10MHZ）
433MHz band,2.5kHz step
868MHz band,5.0kHz step
915MHz band,7.5kHz step
430.24
860.48
900.72
439.75
879.51
929.27
MHz
f
o
Output frequency（f
ref
=9MHZ）
433MHz band,2.5kHz step
868MHz band,5.0kHz step
915MHz band,7.5kHz step
387.22
774.43
810.65
395.76
791.56
836.34
MHz
f
o
Output frequency（f
ref
=11MHZ）
433MHz band,2.5kHz step
868MHz band,5.0kHz step
915MHz band,7.5kHz step
473.26
946.53
990.79
483.73
967.46
1022.2
MHz
t
lock
PLL lock time After 10MHz step hopping,
frequency error <10 kHz
20 μs
t
sp
PLL start time After crystal stabilized 250 μs
433MHz band 5 7
868MHz band 2 4 P
max
Max available ouput power
915MHz band 2 4
dBm
C
o
output capacitance(set by
antenna tuning circuit)
low bands
high bands
1.5
1.6
2.3
2.2
3.1
2.8
pF
Q
o
Q factor of output capacitance 16 18 22
BR
FSK
FSK data rate 115.2 kbps
df
fsk
FSK deviation 30KHz step 30KHz 210 kHz
C
xl
crystal load capacitance 0.5pF step,tolerance
+/-10%
8.5 16 pF
t
PBt
period of wake-up timer clock calibrated evry 30 seconds 0.95 1.05 ms
t
wake-up
wake-up time(programable) 1 2*10E9 ms
t
POR
internal POR time after power reached 90%
VDD
100 ms
t
sx
Crystal start time ESR < 100 ohms 5 ms
Field testing range
operation band condition range
433MHz band Bandwidth=134KHz, data rate=1.2kbps
Frequency deviation=60KHZ（matches with RFM01）
in free open area
>200m
868MHz band Bandwidth=134KHz, data rate=1.2kbps
Frequency deviation=60KHZ（matches with RFM01）
in free open area
>200m
915MHz band Bandwidth=134KHz, data rate=1.2kbps
Frequency deviation=60KHZ（matches with RFM01）
in free open area
>200m