Table of Contents
Advertisement
Table 3: Recommended external components
Component
Function
RB1, RB2
Feed resistor
Rprot
Protection resistance
Ztest
Test resistor
Rf1, Rf2
DC bias filter
Cb1, Cb2
No-load stabilisation
Cdci
DC feed separation
Cf1,Cf2
DC bias filter
Cvag
Analog ground decoupling
CV3VA
Analog 3,3V regulator decoupling
CV3VD
Digital 3,3V decoupling
Cs, Cd
Battery supply decoupling
Cpll
PLL loop filter
Cpwrs
Power-on reset delay
Rpws
Power-on reset delay
D1
Power loss reset
Dp
Battery input protection
* ±1% results in a maximum longitudinal balance of 40dB. For higher values, more
precise matching is required (e.g. ±0.1% for 46dB).
** Capacitors are generally not required. They are foreseen to stabilise the line dri-
ver outputs when active but driving no load (test condition only).
MTK-40131
Value
50Ω
2x10Ω
510Ω
10kΩ
1nF
330nF
470nF
100nF
10µF+100nF
10µF+100nF
100nF
4.7nF
100nF
100kΩ
BAT46
10
Comment
1/4 W ±1% *
1/4 W, optional
100V **
5%
100V, 10%
100V
Any small signal diode
Required depending on
the power supplies
Advertisement
Table of Contents
