SX1232IMLTRT View Datasheet(PDF) - Semtech Corporation
Part Name
Description
Manufacturer
SX1232IMLTRT
Semtech Corporation
SX1232IMLTRT Datasheet PDF : 97 Pages
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WIRELESS & SENSING
SX1232
DATASHEET
BRF
BRO
BRA
FDA
Bit rate, FSK
Bit rate, OOK
Bit Rate Accuracy
Frequency deviation, FSK (1)
Programmable values (1)
Programmable
ABS(wanted BR - available BR)
Programmable
FDA + BRF/2 =< 250 kHz
1.2
-
300 kbps
1.2
-
32.768 kbps
-
-
250 ppm
0.6
-
200 kHz
Note For Maximum Bit rate the maximum modulation index is 1.
2.4.3. Receiver
All receiver tests are performed with RxBw = 10 kHz (Single Side Bandwidth) as programmed in RegRxBw, receiving a
PN15 sequence. Sensitivities are reported for a 0.1% BER (with Bit Synchronizer enabled), unless otherwise specified.
Blocking tests are performed with an unmodulated interferer. The wanted signal power for the Blocking Immunity, ACR,
IIP2, IIP3 and AMR tests is set 3 dB above the receiver sensitivity level.
Table 6 Receiver Specification
Symbol
RFS_F
RFS_O
CCR
ACR
BI
AMR
Description
Conditions
Min
Direct tie of RFI and RFO pins, as FDA = 5 kHz, BR = 1.2 kb/s
-
shown in Figure 39.
FDA = 5 kHz, BR = 4.8 kb/s
-
FSK sensitivity, highest LNA gain. FDA = 40 kHz, BR = 38.4 kb/s*
-
FDA = 20 kHz, BR = 38.4 kb/s**
-
FDA = 62.5 kHz, BR = 250 kb/s***
-
Split RF paths, as shown in
FDA = 5 kHz, BR = 1.2 kb/s
-
Figure 40, LnaBoost is turned
FDA = 5 kHz, BR = 4.8 kb/s
-
on, the RF switch insertion loss is FDA = 40 kHz, BR = 38.4 kb/s*
-
not accounted for.
FDA = 20 kHz, BR = 38.4 kb/s**
-
FDA = 62.5 kHz, BR = 250 kb/s***
-
OOK sensitivity, highest LNA gain BR = 4.8 kb/s
-
Conditions of Figure 39
BR = 32 kb/s
-
Co-Channel Rejection
Adjacent Channel Rejection
-
FDA = 2 kHz, BR = 1.2kb/s,
RxBw = 5.2kHz
Offset = +/- 25 kHz -
Typ
-119
-115
-105
-106
-92
-123
-119
-110
-110
-97
-117
-108
-8
54
Max Unit
- dBm
- dBm
- dBm
- dBm
- dBm
- dBm
- dBm
- dBm
- dBm
- dBm
- dBm
- dBm
- dB
- dB
Blocking Immunity
AM Rejection, AM modulated
interferer with 100% modulation
depth, fm = 1 kHz, square
FDA = 5 kHz, BR=4.8kb/s
Offset = +/- 25 kHz -
50
- dB
Offset = +/- 50 kHz -
50
- dB
Offset = +/- 1 MHz -
73
- dB
Offset = +/- 2 MHz -
78
- dB
Offset = +/- 10 MHz -
87
- dB
Offset = +/- 1 MHz -
73
- dB
Offset = +/- 2 MHz -
78
- dB
Offset = +/- 10 MHz -
87
- dB
Rev 3 - August 2012
Page 14
www.semtech.com
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