TDA5252G2 INFINEON [Infineon Technologies AG], TDA5252G2 Datasheet - Page 57

• Manufacturer Part Number: TDA5252G2
• Description: ASK/FSK 915MHz Wireless Transceiver
• Manufacturer: INFINEON [Infineon Technologies AG]

suppression of adjacent interference signals, the narrowest possible IQ bandwidth should be
realized (see Section 3.3).
3.3
The IQ-Filter should be set to values corresponding to the RF-bandwidth of the received RF signal
via the D1 to D3 bits of the LPF register (subaddress 03H).
Table 3-9
Figure 3-17
Data Sheet
D3
0
0
0
0
1
1
1
1
IQ-Filter
D2
0
0
1
1
0
0
1
1
3dB cutoff frequencies I/Q Filter
I/Q Filter Characteristics
- 2 0
- 3 0
- 4 0
- 5 0
- 6 0
- 7 0
- 8 0
- 10
10
0
10
D1
0
1
0
1
0
1
0
1
nominal f
10 0
(programmable)
150 (default)
not used
not used
f [ kHz]
350
250
200
100
57
50
-3dB
in kHz
10 0 0
50kHz
100kHz
150kHz
200kHz
250kHz
350kHz
resulting effective
bandwidth in kHz
10 0 0 0
channel
700
500
400
300
200
100
TDA5252 G2
Version 1.1
Application
iq_filter_curve.wmf
2007-02-26