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Si4320
AC Characteristics
Symbol
Parameter
Conditions/Notes
Min
Typ
Max
Units
315 MHz band, 2.5 kHz resolution
310.24
319.75
f LO
Receiver frequency
433 MHz band, 2.5 kHz resolution
868 MHz band, 5.0 kHz resolution
430.24
860.48
439.75
879.51
MHz
915 MHz band, 7.5 kHz resolution
900.72
929.27
mode 0
mode 1
60
120
67
134
75
150
BW
Base-band bandwidth
mode 2
180
200
225
kHz
mode 3
mode 4
mode 5
240
300
360
270
350
400
300
375
450
BR
BRA
FSK bit rate
FSK bit rate
With internal digital filters
With analog filter
115.2
256
kbps
kbps
BER 10 , BW=67 kHz, BR=1.2 kbps
P min
AFC range
IIP3 inh
IIP3 outh
IIP3 inl
IIP3 outl
P max
Rin
Cin
RS a
RS r
C ARSSI
RS step
Receiver Sensitivity
AFC locking range
Input IP3
Input IP3
IIP3 (LNA –6dB gain)
IIP3 (LNA –6dB gain)
Maximum input power
RF input impedance real part
(differential) (Note 2)
RF input capacitance
RSSI accuracy
RSSI range
Filter cap for ARSSI
RSSI programmable level steps
-3
(Note 1)
? f FSK : FSK deviation in the received
signal
In band interferers in high bands
Out of band interferers
f-f LO > 4MHz
In band interferers in low bands
Out of band interferers
f-f LO > 4MHz
LNA: high gain
LNA gain (0, -14dB)
LNA gain (-6, -20dB)
0
1
-109
0.8* ? f FSK
-21
-18
-15
-12
250
500
1
+/-5
46
6
-100
dBm
dBm
dBm
dBm
dBm
dBm
Ohm
pF
dB
dB
nF
dB
Until the RSS output goes high after the
RS resp
DRSSI response time
input signal exceeds the
500
μs
preprogrammed limit C ARRSI =5nF
Note 1:
Note 2:
See the BER diagrams in the measurement results section for detailed information.
See matching circuit parameters and antenna design guide for information, and Application Notes available from
www.silabs.com/integration.
9
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