RFM12B_15 Datasheet, PDF (10/41 Pages) List of Unclassifed Manufacturers – Universal ISM Band FSK Transceiver

RFM12B
AC Characteristics (PLL parameters)
Symbol
f _ref
Parameter
PLL reference frequency
f_o
Receiver LO/Transmitter carrier
frequency
t _lock
PLL lock time
t _stP
PLL startup time (Note 10)
AC Characteristics (Receiver)
Symbol Parameter
BW
Receiver bandwidth
BR _RX
BRA _RX
P _min
AFC _range
IIP3 _inh
IIP3 _outh
IIP3 _inl
IIP3 _outl
P _max
Cin
RS _a
RS _r
RS _ps
C _ARSSI
RS _step
RS _resp
P _{sp_rx}
FSK bit rate (Note 10)
FSK bit rate (Note 10)
Receiver Sensitivity
AFC locking range
Input IP3
Input IP3
IIP3 (LNA –6 dB gain)
IIP3 (LNA –6 dB gain)
Maximum input power
RF input capacitance
RSSI accuracy
RSSI range
RSSI power supply dependency
Filter capacitor for ARSSI
RSSI programmable level steps
DRSSI response time
Receiver spurious emission
Conditions/Notes
(Note 2)
433 MHz band, 2.5 kHz resolution
868 MHz band, 5.0 kHz resolution
915 MHz band, 7.5 kHz resolution
Frequency error < 1kHz
after 10 MHz step
With a running crystal oscillator
Min
Typ
Max Units
9
10
11
MHz
430.24
439.75
860.48
879.51 ^MHz
900.72
929.27
30
µs
200
300
µs
Conditions/Notes
mode 0
mode 1
mode 2
mode 3
mode 4
mode 5
With internal digital filters
With analog filter
BER 10^-3, BW=67 kHz, BR=1.2 kbps,
868 MHz Band (Note 3)
δf_FSK: FSK deviation in the received
signal
In band interferers in high bands
(868 MHz, 915 MHz)
Out of band interferers l f-f_o l > 4 MHz
In band interferers in low band (433
MHz)
Out of band interferers l f-f_o l > 4 MHz
LNA: high gain
When input signal level lower than -54
dBm and greater than -100 dBm
Until the RSSI signal goes high after
the input signal exceeds the
preprogrammed limit C_ARRSI = 4.7 nF
Min
Typ
Max Units
67
134
200
kHz
270
340
400
0.6
115.2 kbps
256
kbps
-110
dBm
0.8·δf_FSK
-21
-18
-15
-12
0
1
±6
46
+35
1
6
dBm
dBm
dBm
dBm
dBm
pF
dB
dB
mV/V
nF
dB
500
µs
-60
dBm
10
Tel: [phone] Fax: [phone] E-mail: [e-mail] http://www.hoperf.com