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Philips Semiconductors Product specification
Home automation modem TDA5051A
Fig.19 Gain (curve 1) and input impedance (curve 2) of the coupling network (fcr = 115.2 kHz; L = 47 µH;C = 47 nF).Main features of the coupling network: 50Hz rejection >80 dB; anti-aliasing for the digital filter >50 dB at the
sampling frequency (1⁄2fosc). Input impedance always higher than 10Ω within the 95 to 148.5 kHz band.
handbook, full pagewidth
20
0
−20
−40
−60
−80
−100
MBH907
10
gain
(dB)
10210
102
103
103104105f (Hz)
input
impedance
(Ω)
106107
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)
Zline (Ω)102