TDA2320A ST Microelectronics, TDA2320A Datasheet - Page 10

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TDA2320A

Manufacturer Part Number
TDA2320A
Description
STEREO AMPLIFIER
Manufacturer
ST Microelectronics
Datasheet
TDA2320A
Figure 21 : Fifth Order 3.4kHz Low-pass Butterworth Filter
R1
R2
R
i
C
C1
i
1st order
For f
= 3.4kHz and R
= R1 = R2 = R3 = R4 = 10k , we obtain :
c
i
1
1
C1
1.354 .
.
6.33nF
R
2 f
c
1
1
C1
0.421 .
.
1.97nF
R
2 f
c
1
1
C2
1.753 .
.
8.20nF
R
2 f
c
Figure 22 : Sixth-pole 355Hz Low-pass Filter (Chebychev type)
2
-
1/2
10k
10k
1
TDA
0.47 F
2320A
3
56k
This is a 6-pole Chebychev type with 0.25dB ripple
in the passband.A decoupling stage is used to avoid
the influence of the input impedance of the filter’s
characteristics.
10/12
C2
3
R3
R4
1/2
1
TDA2320A
2
-
2nd order
1
C3
0.309 .
.
R
1
C4
3.325 .
.
R
The attenuation of the filter is 30dB at 6.8kHz and
better than 60dB at 15kHz.
2
-
1/2
6
TDA
-
1/2
2320A
10k
10k
7
3
TDA
2320A
5
16.3nF
86.1nF
220nF
161nF
The attenuation is about 55dB at 710Hz and
reaches 80dB at 1065Hz. The in band attenuation
is limited in practice to the 0.25dB ripple and does
not exceed 1/2dB at 0.9f
C4
5
1/2
7
C3
TDA2320A
6
-
3rd order
1
1.45nF
2 f
c
1
15.14nF
2 f
c
6
-
1/2
7
TDA
2320A
10k
10k
1
5
3.54nF
60nF
.
c

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