Philips TDA5051A Manuale Utente Pagina 19

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1999 May 31 19
Philips Semiconductors Product specification
Home automation modem TDA5051A
Fig.19 Gain (curve 1) and input impedance (curve 2) of the coupling network (f
cr
= 115.2 kHz; L = 47 µH;
C = 47 nF).
Main features of the coupling network: 50 Hz rejection >80 dB; anti-aliasing for the digital filter >50 dB at the
sampling frequency (
1
2
f
osc
). Input impedance always higher than 10 within the 95 to 148.5 kHz band.
handbook, full pagewidth
20
0
20
40
60
80
100
MBH907
10
gain
(dB)
10
2
10
10
2
10
3
10
3
10
4
10
5
f (Hz)
input
impedance
()
10
6
10
7
1
2
Fig.20 Output voltage as a function of line impedance (with coupling network; L = 47 µH; C = 47 nF).
handbook, halfpage
130
120
110
100
MBH908
110
V
o
(dBµV)
Z
line
()
10
2
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