Owner's manual

RFM12B
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I
in
Input current except power -25 25 mA
ESD Human body model 1000 V
T
st
Storage temperature -55 125
℃
T
ld
Soldering temperature(10s) 260
℃
Recommended working range
symbol parameter minimum maximum Unit
V
dd
Positive power supply 2.2 3.8 V
T
op
Working temperature -40 85
℃
DC characteristic
symbol parameter Remark minimum typical maximum Unit
I
dd_TX_0
Supply current
(TX mode, P
out
= 0dBm)
315,433MHz band
868MHz band
915MHz band
15
16
17
17
18
19
mA
I
dd_TX_PMAX
Supply current
(TX mode, P
out
= P
max
)
315,433MHz band
868MHz band
915MHz band
22
23
24
24
25
26
mA
I
dd_RX
Supply current
(RX mode)
315,433MHz band
868MHz band
915MHz band
11
12
13
13
14
15
mA
I
x
Idle current Crystal oscillator on 0.62 1.2 mA
I
pd
Sleep mode current All blocks off 0.3 uA
I
lb
Low battery detection 0.5 uA
V
lb
Low battery detect
threshold
0.1V per step 2.2 3.7 V
V
lba
Low battery detection
accuracy
0 5 %
V
il
Low level input 0.3*V
dd
V
V
ih
High level input 0.7*V
dd
V
I
il
Leakage current V
il
=0V -1 1 uA
I
ih
Leakage current V
ih
=V
dd
, V
dd
=5.4V -1 1 uA
V
ol
Low level output I
ol
=2mA 0.4 V
V
oh
High level output I
oh
=-2mA V
dd
-0.4 V
AC characteristic
symbol parameter remark min typical max Unit
f
ref
PLL frequency 9 10 11 MHz
f
LO
frequency
(10MHz crystal
used)
433 MHz band,2.5KHz step
868 MHz band,5KHz step
915 MHz band,7.5KHz step
430.24
860.48
900.72
439.7
5
879.5
1
929.2
7
MHz