MRF89XAM8A-I Datasheet, PDF (125/140 Pages) Microchip Technology – Ultra Low-Power, Integrated ISM Band Sub-GHz Transceiver

5.4.12 FSK SPECTRUM IN EUROPE
Figure 5-27 illustrates the minimal spectral occupation
achievable in the European band, ensure that the min-
imum frequency deviation that a MRF89XA receiver
can accept is 33 kHz. If the companion receiver can
accept smaller frequency deviations, the range of mod-
ulation bandwidth can be further decreased.
FIGURE 5-27:
FSK – 1.56 KBPS – ±33 kHz
MRF89XA
The default configuration of the MRF89XA yields the
bandwidth visible on Figure 5-28.
FIGURE 5-28:
FSK – 25 KBPS – ±50 kHz
Figure 5-28 illustrates the maximal bit rate and
frequency deviation that can fit in the 868 to 868.6
MHz European sub-band.
© 2010–2011 Microchip Technology Inc.
Preliminary
DS70622C-page 125