PEB3265 Infineon Technologies Corporation, PEB3265 Datasheet - Page 102

• Manufacturer Part Number: PEB3265
• Description: (PEB326x / PEB426x) Dual Channel Slicofi-2 / Slic Duslic
• Manufacturer: Infineon Technologies Corporation

Preliminary
The strong influence of the ringer load impedance
is demonstrated by the formula for the current sensor power dissipation (
Table 24
The ringer load impedance
Z
Z
R
C
R
Internal Unbalanced Ringing with SLIC-P
The ring signal is present just on one line (modes ROR, ROT), while the other line is
connected to a potential of GND.
The minimum battery voltage
calculated using:
–
External Ringing (SLIC-E/-E2 and SLIC-P)
When an external ring generator and ring relays are used, the SLIC can be switched to
Power Down mode.
The “low-power” SLIC-P is optimized for extremely power-sensitive applications (see
Table
while
Data Sheet
LD
LD
RNG
L
RNG
V
BATR
= |
V
23). SLIC-P has three different battery voltages.
Z
BATH
LD
–
and
|
V
Load impedance
Ringer resistance
Ringer capacitance
Line resistance
DROP
and
e
Table
j LD
V
= 2
BATL
=
25.
R
L
are normally used for off-hook mode.
V
+
RNG, PEAK
R
Z
RNG
LD
V
can be calculated as follows:
BATR
+ 1/j
= 2
necessary for a required ring amplitude can be
C
RNG
V
102
RNG,RMS
with
crest factor
Z
V
LD
BATR
and the number of ringers
Operational Description
can be used for on-hook,
P
2000-07-14
I
DuSLIC
+
P
O
) in