PEB20591HV22XP Lantiq, PEB20591HV22XP Datasheet - Page 54

• Manufacturer Part Number: PEB20591HV22XP
• Manufacturer: Lantiq

Specifications of PEB20591HV22XP

• Control Interface: HDLC
• Lead Free Status / Rohs Status: Supplier Unconfirmed

PRELIMINARY
Data Sheet
6
This chapter provides some additional information on how to use the VIP. The first
section describes some external circuitry: Recommended line transformers, resistors
and capacitors. Different wiring configurations in user premises are depicted for the LT-
S mode, and the different loops that can be closed in the VIP via the DELIC are also
presented in the following sections.
6.1
6.1.1
The VIP is connected to the U
side) of the transformer could be center-tapped for the phantom power supply.
Reference model parameters of the transformers are shown below.
U
Primary to secondary transformer ratio:
Primary total DC resistance:
Primary inductance:
Primary inductance with secondary short circuited:
Coupling capacitance:
S/T Transformer
Primary to secondary transformer ratio:
Primary total DC resistance:
Primary inductance:
Primary inductance with secondary short circuited:
Coupling capacitance:
Figure 27
PN
Transformer
Application Hints
VIP External Circuitry
Recommended Line Transformers
1:1 Transformer Model
Ideal Transformer
1:1
C
PN
K
or S/T lines via 1:1 transformers. The line side (primary
L
M
L
P
46
R
vip-trafo-model.vsd
1:1
R
L
L
C
1:1
R
L
L
C
Line Side
M
P
M
P
K
K
< 22 H
< 6 H
> 2.1 mH =20 %
> 30 mH
< 150 pF
< 80 pF
4..8
2
=
Application Hints
PEB 20590
PEB 20591
2001-03-01