RFM12
AC characteristic
symbol
f
ref
parameter
PLL frequency
frequency
f
LO
(10MHz crystal
used)
315 MHz band,2.5KHz step
433 MHz band,2.5KHz step
868 MHz band,5KHz step
915 MHz band,7.5KHz step
frequency
f
LO
(8MHZ crystal
used)
315 MHz band,2.5KHz step
433 MHz band,2.5KHz step
868 MHz band,5KHz step
915 MHz band,7.5KHz step
frequency
f
LO
(12MHZ crystal
used)
315 MHz band,2.5KHz step
433 MHz band,2.5KHz step
868 MHz band,5KHz step
915 MHz band,7.5KHz step
BW
Receiver
bandwidth
1
2
3
4
5
6
t
lock
PLL lock time
After 10MHz step hopping,
frequency error <10 kHz
BR
Data rate
With internal digital
demodulator
BR
A
P
min
AFC
range
Data rate
sensitivity
AFC working range
With external RC filter
BW=134KHz,BR=1.2kbps
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
RS
RESP
DRSSI response
time
RSSI output high after
valid , CARRSI=5nF
500
us
-102
0.8*
df
FSK
±5
46
1
6
dB
dB
nF
dB
256
-96
kbps
dBm
0.6
115.2
kbps
remark
min
8
310.24
430.24
860.48
900.72
248.19
344.19
688.38
720.57
372.28
516.28
1032.5
1080.8
60
120
180
240
300
360
67
134
200
270
350
400
20
typical
10
max
12
319.75
439.75
879.51
929.27
255.80
351.80
703.61
743.41
383.71
527.71
1055.4
1115.1
75
150
225
300
375
450
us
KHz
MHz
MHz
MHz
Unit
MHz
AC characteristic(Transmitter)
symbol
P
max
parameter
Available output power with
optimal antenna impedance
P
out
Typical output power
remark
315/433MHZ band
868/915MHZ band
Selectable in 3 dB
steps
Tel: +86-755-82973806
Fax: +86-755-82973550 E-mail: sales@hoperf.com
http://www.hoperf.com
P
max
-21
min
typical
8
0
P
max
dbm
max
Unit
dbm
HOPERF [ Hope Microelectronics co., Ltd ]
