Philips TDA5051A - Manual (Page 16)

TDA5051A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 5 — 13 January 2011 16 of 29
NXP Semiconductors
TDA5051A
Home automation modem
a. Gain
b. Input impedance
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
Ω within the
95 kHz to 148.5 kHz band.
Fig 16. Gain (a) and input impedance (b) of the coupling network
002aaf055
f (Hz)
10 10 7 10 6 10 5 10 2 10 4 10 3
−60
−20
20
G
(dB)
−100
002aaf431
f (Hz)
10 10 7 10 6 10 5 10 2 10 4 10 3
10 2
10 3
Z i
( Ω)
10