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SX1211
WIRELESS & SENSING
2.4.4. Receiver
On the following table, fc and fo describe the bandwidth of the active channel filters as described in section 3.4.4.2.
All sensitivities are measured receiving a PN15 sequence, for a BER of 0.1.%
Table 8: Receiver Specification
TS_RE
Input 3 order intercept
Symbol
RFS_F
RFS_O
CCR
ACR
BI
RXBW_F (1,2)
RXBW_O (1,2)
IIP3
(1)
TS_RE2 (1)
TS_RE_HOP
TS_RSSI
Description
Sensitivity (FSK)
Sensitivity (OOK)
Co-channel rejection
Adjacent channel
rejection
Blocking immunity
Receiver bandwidth in
FSK mode
Receiver bandwidth in
OOK mode
rd
point
Receiver wake-up time
Receiver wake-up time
Receiver hop time from
Rx ready to Rx ready with
a frequency hop
RSSI sampling time
Conditions
869 MHz, BR=25 kb/s, Fdev
=50 kHz, fc=100 kHz
869 MHz, BR=66.7 kb/s,
Fdev=100 kHz, fc=200 kHz
915 MHz, BR=25 kb/s,
Fdev=50 kHz, fc=100 kHz
915 MHz, BR = 66.7 kb/s,
Fdev=100 kHz, fc=200 kHz
869 MHz, 2kb/s NRZ
fc-fo=50 kHz, fo=50 kHz
869 MHz, 16.7 kb/s NRZ
fc-fo=100 kHz, fo=100 kHz
915 MHz, 2kb/s NRZ
fc-fo=50 kHz, fo=50 kHz
915 MHz, 16.7 kb/s NRZ
fc-fo=100 kHz, fo=100 kHz
Modulation as wanted signal
Offset = 300 kHz, unwanted
tone is not modulated
Offset = 600 kHz, unwanted
tone is not modulated
Offset = 1.2 MHz, unwanted
tone is not modulated
Offset = 1 MHz,
unmodulated
Offset = 2 MHz,
unmodulated, no SAW
Offset = 10 MHz,
unmodulated, no SAW
Single side BW
Polyphase Off
Single side BW
Polyphase On
Interferers at 1MHz and
1.950 MHz offset
From FS to Rx ready
From Stby to Rx ready
200 kHz step
1MHz step
5MHz step
7MHz step
12MHz step
20MHz step
27MHz step
From Rx ready
Min
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
50
50
-
-
-
-
-
-
-
-
-
-
-
Typ
-107
-103
-105
-101
-113
-106
-111
-105
-12
27
52
57
-48
-37
-33
-
-
-28
280
600
400
400
460
480
520
550
600
-
Max
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
250
400
-
500
900
-
-
-
-
-
-
-
1/Fdev
Unit
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBc
dB
dB
dB
dBm
dBm
dBm
kHz
kHz
dBm
μs
μs
μs
μs
μs
μs
μs
μs
μs
s
Guaranteed by design and characterization
This reflects the whole receiver bandwidth, as described in sections 3.4.4.1 and 3.4.4.2
DR_RSSI RSSI dynamic Range Ranging from sensitivity - 70
(1)
(2)
-
dB
Rev 8 – February 2013
Page 10 of 92
www.semtech.com
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