SM1211E915 Semtech, SM1211E915 Datasheet - Page 87
SM1211E915
Manufacturer Part Number
SM1211E915
Description
Dev Kit Accessory
Manufacturer
Semtech
Specifications of SM1211E915
Modulation Type
FSK, OOK
Data Rate Max
200Kbps
Frequency Range
902MHz To 928MHz
Supply Voltage Range
2.1V To 3.6V
Module Interface
SPI
Supply Current
25mA
Accessory Type
RF Module
Sensitivity
-105dBm
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Package Type
TQFN EP
Operating Supply Voltage (min)
2.1V
Operating Supply Voltage (typ)
2.5/3.3V
Operating Supply Voltage (max)
3.6V
Sensitivity (dbm)
-105dBm
Rohs Compliant
NA
Lead Free Status / RoHS Status
na
Lead Free Status / RoHS Status
na
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Figure 82 shows the minimal spectral occupation achievable in the European band, keeping in mind that the
minimum frequency deviation that a SX1211 receiver can accept is 33 kHz. If the companion receiver can bear
smaller frequency deviations, the range of modulation bandwidth can be further decreased.
The default configuration of the SX1211 yields the bandwidth visible on Figure 83:
Figure 84 shows the maximal bit rate and frequency deviation that can fit in the 868 to 868.6 MHz European sub-
band:
Rev 7 – Sept 2
ADVANCED COMMUNICATIONS & SENSING
7.6.12. FSK Spectrum in Europe
nd
, 2008
Figure 82: FSK - 1.56kbps - +/-33 kHz
Figure 83: FSK - 25 kbps - +/-50 kHz
Figure 84: FSK - 40 kbps - +/-40 kHz
Page 87 of 92
www.semtech.com
SX1211
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