CC1000
SWRS048A Page 34 of 55
23. IF output
CC1000
has a built-in 10.7 MHz IF output
buffer. This buffer could be applied in
narrowband applications with
requirements on mirror image filtering.
The system is then built with
CC1000
, a
10.7 MHz ceramic filter and an external
10.7 MHz demodulator. The external
network for IF output operation is shown in
Figure 23. R281 = 470
Ω
, C281 = 3.3nF.
The external network provides 330
Ω
source impedance for the 10.7 MHz
ceramic filter.
RSSI/IF
CC1000
R281
C281
To 10.7MHz filter
and demodulator
RSSI/IF
CC1000
R281
C281
To 10.7MHz filter
and demodulator
Figure 23. IF output circuit