SX1211
WIRELESS & SENSING
Frf , ook , tx =
9
8
Flo ? Fdev
Frf , ook , tx =
9 Fxtal
8 R + 1
[ 75 ( P + 1 ) + S ) ] ? Fdev
Consequently, in receive mode, due to the low intermediate frequency (Low-IF) architecture of the SX1211 the
frequency should be configured so as to ensure the correct low-IF receiver baseband center frequency, IF2.
Frf , ook , rx =
9
8
Flo ? IF 2
Frf , ook , rx =
9 Fxtal
8 R + 1
[ 75 ( P + 1 ) + S ) ] ? IF 2
Note that from Section 3.4.4, it is recommended that IF2 be set to 100 kHz.
Rev 8 – February 2013
Page 17 of 92
www.semtech.com
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