TDA5231XT Infineon Technologies, TDA5231XT Datasheet - Page 91
TDA5231XT
Manufacturer Part Number
TDA5231XT
Description
Manufacturer
Infineon Technologies
Datasheet
1.TDA5231XT.pdf
(186 pages)
Specifications of TDA5231XT
Operating Temperature (min)
-40C
Operating Temperature (max)
105C
Operating Temperature Classification
Industrial
Product Depth (mm)
4.4mm
Product Length (mm)
9.7mm
Lead Free Status / Rohs Status
Compliant
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The selection is done with the registers FSKFILBW0 and FSKFILBW1.
1) Values are only ”about” values and should be used for orientation only. Bandwidth is also dependent on
THe CIC-Filter also requires a comb delay and a scaling. For the comb delay, a value of
8 must be used.
The scaling is calculated as below:
SCA... Scaling
R...Decimation Factor(=FSKFILBW0+1)
M...Comb Delay Value(=8 +1= 9)
The calculation above is fully automatically performed by the IAF TDA523x
Configuration Tool!
Dual:
ADDR:
Data Sheet
3:0
Bit R/W Description
Setting
+/-250
+/-125
+/-62.5
+/-31.25
IF Filter, FSK Deviation, Data Rate and different configuration settings.
AFSKFILBW0
W
0x7B
FSKDEC: FSK Pre Filter Decimation Factor
0001b: ±250 prefilter bandwidth .. recommended
0011b: ±125 prefilter bandwidth
0111b: ±62.5 prefilter bandwidth
1111b: ±31.25 prefilter bandwidth
and
0x9B
+/-80kHz
+/-50kHz
+/-40kHz
+/-20kHz
SCA
Typical 3dB Bandwidth
and BFSKFILBW0:
=
14
−
round
87
FSK Pre Filter Decimation
[
log
1)
2
(
R
0001b recommended
0011b
0111b
1111b
FSKDEC Setting
*
M
)
+
Functional Description
4
]
Reset Value: 0x00
Version 4.0, 2007-06-01
TDA523x
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