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參數(shù)資料
| 型號： | TDA5200 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 參考電壓二極管 |
| 英文描述： | surface mount silicon Zener diodes |
| 中文描述： | 表面貼裝硅穩(wěn)壓二極管 |
| 文件頁數(shù)： | 24/43頁 |
| 文件大?。?/td> | 911K |
| 代理商： | TDA5200 |
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Applications
4 - 4
TDA 5200
Wireless Components
Specification, March 2000
4.2 Data Filter Design
Utilising the on-board voltage follower and the two 100k
on-chip resistors a
2nd order Sallen-Key low pass data filter can be constructed by adding 2 exter-
nal capacitors between pins 19 (SLP) and 22 (FFB) and to pin 21 (OPP) as
depicted in the following figure and described in the following formulas
1
.
Filter_Design.wmf
Figure 4-3
Data Filter Design
(1)
(2)
with
(3)
the quality factor of the poles
where
in case of a Bessel filter
a = 1.3617, b = 0.618
and thus
Q = 0.577
and in case of a Butterworth filter
a = 1.141, b = 1
and thus
Q = 0.71
Example: Butterworth filter with f
3dB
= 5kHz and R = 100k
:
C
1
= 450pF, C
2
= 225pF
1. taken from Tietze/Schenk: Halbleiterschaltungstechnik, Springer Berlin, 1999
Pins:
22
21
19
R
R
100k
100k
C
1
C
2
C
1
2Q b
R2
Π
f
3dB
----------------------
=
C2
b
4QR
Π
f
3dB
---------------------------
=
Q
b
a
------
=
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| TDA5200_10 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ASK Single Conversion Receiver |
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| TDA5201_10 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ASK Single Conversion Receiver |
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