Rainbow Electronics RF12 - Manual (Page 10)

RF12
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AC Characteristics (Receiver)
Symbol Parameter Conditions/Notes Min Typ Max Units
BW
Receiver
bandwidth
mode 0
mode 1
mode 2
mode 3
mode 4
mode 5 60
120
180
240
300
360 67
134
200
270
350
400 75
150
225
300
375
450
kHz
BR FSK bit rate With internal digital filters 0.6 115.2 kbps
BRA FSK bit rate With analog filter 256 kbps
P
min
Receiver
Sensitivity BER 10 -3 , BW=67kHz, BR=1.2kbps
(Note 2)
-109 -100
dBm
AFC
range
AFC locking range df
FSK
: FSK deviation in the received
signal
0.8*df
FSK
IIP3
inh
Input IP3 In band interferers in high bands(868,
915 MHz) -21
dBm
IIP3
outh
Input IP3 Out of band interferers l f-f
o
l > 4 MHz -18
dBm
IIP3
inl
IIP3 (LNA –6 dB
gain) In band interferers in low bands (315,
433 MHz) -15
dBm
IIP3
outl
IIP3 (LNA –6 dB
gain) Out of band interferers l f-f
o
l > 4 MHz -12
dBm
P
max
Maximum input
power LNA: high gain 0
dBm
C
in
RF input
capacitance 1
pF
RS
a
RSSI accuracy +/-5 dB
RS
r
RSSI range 46 dB
C
ARSSI
Filter capacitor for
ARSSI 1
nF
RS
step
RSSI
programmable
level steps 6
dB
RS
resp
DRSSI response
time Until the RSSI signal goes high after
the input signal exceeds the
preprogrammed limit C
ARRSI
= 5 nF
500
us
AC Characteristics (Transmitter)
Symbol Parameter Conditions/Notes Min Typ Max Units
I
OUT
Open collector output DC
current
Programmable 0.5 6 mA
P
max
Available output power with
optimal antenna impedance
(Note 3, 4)
In low bands
In high bands
8
4
dBm
P
out
Typical output power
Selectable in 3 dB steps
(Note 5)
P
max
-21
P
max
dBm
P
sp
Spurious emission
At max power with loop
antenna (Note 6)
-50 dBc