If Frequency - Texas Instruments CC110 Series Design Manual

120
100
80
60
40
20
0
Figure 2. PER versus Input Power Level for Different AGC Register Settings (3.8 kBaud,
3.2

IF Frequency

Register FSCTRL1 sets the IF frequency and the optimum value is different for different RX
filter bandwidths. It is therefore recommended to find the FSCTRL1 setting using one of the
preferred RX filter bandwidth settings in SmartRF
filter bandwidth is not given by one of the preferred settings, choose the FSCTRL1 setting for
the first RX filter bandwidth that is wider than the wanted RX filter bandwidth.
As an example, for a wanted 150 kHz RX filter bandwidth use the FSCTRL1 setting given for
232 kHz RX filter bandwidth.
Figure 3. Available RX Filter Bandwidths Given by the Preferred Settings in SmartRF
Input power level [dBm]
100 kHz RX Filter Bandwidth)
®
Studio (see Figure 3). If the wanted RX
Studio
SWRA215E
Design Note DN022
07 00 92
06 00 92
05 00 92
04 00 92
03 00 92
RX filter bandwidths RX filter bandwidths
used by preferred settings: used by preferred settings:
58 kHz, 100 kHz, 232 kHz, 58 kHz, 100 kHz, 232 kHz,
325 kHz, 540 kHz, 812 kHz 325 kHz, 540 kHz, 812 kHz
®
Page 4 of 8