TDA5250D2_07 Datasheet, PDF (61/94 Pages) Infineon Technologies AG – ASK/FSK 868MHz Wireless Transceiver

TDA5250 D2
Version 1.7
Application
10
0
- 10
-20
-30
-40
-50
-60
-70
-80
10
10 0
10 0 0
f [ kHz]
Figure 3-20 I/Q Filter Characteristics
50 kHz
10 0 kHz
150 kHz
2 0 0 kHz
2 50 kHz
3 50 kHz
10 0 0 0
effective channel bandwidth
iq_filter_curve.wmf
-f
3dB^f
IQ Filter
f_3dB
f
IQ Filter
Figure 3-21 IQ Filter and frequency characteristics of the receive system
iq_char.wmf
3.4
Data Filter
The Data-Filter should be set to values corresponding to the bandwidth of the transmitted Data
signal via the D4 to D7 bits of the LPF register (subaddress 03H).
Data Sheet
61
2007-02-26