RFM12B
Datasheet REV1.2
frequency
f
LO
(9MHZ crystal
used)
433 MHz band,2.5KHz step
868 MHz band,5KHz step
915 MHz band,7.5KHz step
387.22
774.43
810.65
395.7
6
791.5
6
836.3
4
frequency
f
LO
(11MHZ crystal
used)
433 MHz band,2.5KHz step
868 MHz band,5KHz step
915 MHz band,7.5KHz step
473.26
946.53
990.79
483.7
3
967.4
6
1022.
2
BW
Receiver
bandwidth
mode
0
mode
1
mode
2
mode
3
mode
4
mode
5
MHz
MHz
60
120
180
240
300
360
67
134
200
270
350
400
30
75
150
225
300
375
450
us
KHz
t
lock
PLL lock time
After 10MHz step hopping, frequency
error <10 kHz
tst, P
BR
BR
A
PLL startup time
Data rate
Data rate
With a running crystal
oscillator
With internal digital demodulator
With external RC filter
BER 10
-3
, BW=134KHz,BR=1.2kbps, 433MHz band
200
0.6
300
115.2
256
us
kbps
kbps
-109
-105
-105
0.8*
df
FSK
±5
46
1
6
-100
-100
-100
dBm
P
min
sensitivity
BER 10
-3
, BW=134KHz,BR=1.2kbps, 868MHz band
BER 10
-3
, BW=134KHz,BR=1.2kbps, 915MHz band
AFC
range
AFC working
range
df
FSK
: FSK deviation in the received
signal
RS
A
RS
R
C
ARSSI
RS
STEP
RSSI accuracy
RSSI range
ARSSI filter
RSSI
programmable
step
dB
dB
nF
dB
RS
RESP
DRSSI response
time
RSSI output high after valid ,
CARRSI=5nF
500
us
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com
http://www.hoperf.com
HOPERF [ Hope Microelectronics co., Ltd ]
