TDA5200_10 INFINEON [Infineon Technologies AG], TDA5200_10 Datasheet - Page 24

• Manufacturer Part Number: TDA5200_10
• Description: ASK Single Conversion Receiver
• Manufacturer: INFINEON [Infineon Technologies AG]

4.2
Utilizing the on-board voltage follower and the two 100 kΩ on-chip resistors a 2
filter can be constructed by adding 2 external capacitors between pin 19 (SLP) and pin 22 (FFB) and to pin 21
(OPP) as depicted in the following figure and described in the following formulas
Figure 7
with
the quality factor of the poles where
in case of a Bessel filter
and thus
and in case of a Butterworth filter
and thus
Example
Butterworth filter with
1)
Q =
C
Data Sheet
C
1
2
=
=
Taken from Tietze/Schenk: Halbleiterschaltungstechnik, Springer Berlin, 1999
a
R
b
4
2
2
QR
Q
Π
Π
f
b
3
b
dB
f
3
Data Filter Design
Data Filter Design
dB
Pins:
100k
R
a
Q
a
Q
f
C
3dB
1
= 1.3617,
= 1.141,
22
C
= 0.577
= 0.71
= 450 pF,
1
= 5 kHz and
100k
b
R
b
= 1
C
= 0.618
24
C
21
2
2
= 225 pF
R
= 100 kΩ
ASK Single Conversion Receiver
19
nd
1)
order Sallen-Key low pass data
.
Revision 3.0, 2010-12-28
Applications
TDA 5200
(1)
(2)
(3)