TDA5240 Datasheet, PDF (129/284 Pages) Infineon Technologies AG – Enhanced Sensitivity Multi-Channel Quad-Configuration Receiver

3
Applications
RF in
SAW
filter
to µC
VS
SPI Bus
TDA5240
TDA5240
Applications
IF CER
filter
(opt.)
to/from µC
Figure 93 Typical Application Schematic
Note: As a good practice in any RF design, shielding around sensitive nodes can
improve the EMC performance of the application.
For achieving the best sensitivity results the following has to be kept in mind. Every
digital system generates certain frequencies (f_SRC, e.g. the crystal frequency or a
microcontroller clock) and harmonics (N * f_SRC) of it, which can act as interferer (EMI
source) and therefore sensitivity can be reduced.
Data Sheet
129
V4.0, 2010-02-19