If Output - Texas Instruments Chipcon Products CC1000-RTB1 Manual

23. IF output

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