Revision 1.0 11/2009 Page 3 of 8 www.semtech.com
© Semtech 2009
SM1231
USER GUIDE
1 Introduction
The purpose of this tool is to provide a development platform of the SX1231. User can build his
application prototype by simply connecting the module to his target microcontroller and start developing
his application software. The SM1231 module integrates the SX1231 reference design (chip + external
components) plus miscellaneous useful connectors.
Note that this module is also used for the SX1231SKB Evaluation Kit.
It is recommended that this user guide be read in conjunction with the SX1231 datasheet.
2 Reference Design
As illustrated in Figure 1, below, the SM1231 reference design module consists of the following:
• Reference Design: This section includes the chip but also all the external components in an
optimized BOM and form factor. When the user wishes to incorporate the SX1231 to PCB, it is
strongly recommended that this reference design (i.e. schematics, placement, layout, BOM, etc...)
is copied “as is” in the final application board to guarantee optimum performance, regulatory
compliance and lowest development time and design effort.
• MCU Connector: Enables the user to connect the SX1231 control and interface pins to the host
microcontroller (please refer to the SX1231 datasheet for further information). t for further information).
SMA
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r
VDD Jumper
MCU Connector
Reference
Desi
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Figure 1: SM1211 Overview (Top View) Figure 1: SM1211 Overview (Top View)
