PEB3265 Infineon Technologies Corporation, PEB3265 Datasheet - Page 57

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

Preliminary
3.5.5
SLIC-E/-E2 and SLIC-P support internal balanced ringing up to
SLIC-S support balanced ringing up to
The ringing signal is generated digitally within SLICOFI-2x
Figure 27
In ringing mode, the DC feeding regulation loop is not active. A programmable DC ring
offset voltage is applied to the line instead. During ring bursts, the ringing DC offset and
the ringing signal are summed digitally within SLICOFI-2x in accordance with the
programmed values. This signal is then converted to an analog signal and applied to the
SLIC. The SLIC amplifies the signal and supplies the line with ringing voltages up to
85 Vrms. In balanced ringing mode, the SLIC uses an additional supply voltage
SLIC-E/-E2/-S and
SLIC-E/-E2/-S and
The maximum ringing voltage that can be achieved is:
for SLIC-E/-E2/-S:
for SLIC-P:
where:
1)
2)
Data Sheet
In this case V
V
load. V
load. For calculation of the ringing voltage at the ringer load see the Voltage and Power Application Note and
the accompanying MS Excel Sheet for calculation.
SLICOFI-2S2 supports only external ringing
RT,RMS
RT0,RMS
is the open-circuit rms voltage measured directly at pins RING and TIP at the SLIC output with ringer
Internal Balanced Ringing via SLICs
V
V
DROP,R
DROP,T
RING,RMS
Balanced Ringing via SLIC-E/-E2, SLIC-S and SLIC-P
is the rms voltage measured directly at pins RING and TIP at the SLIC output without any ringer
V
DC,RING
V
V
BATR
BATR
= V
RT,RMS
V
for SLIC-P.
V
V
for SLIC-P. The total supply span is now
RING,RMS
RING,RMS
DROP,RT
= V
RT0,RMS
V
V
Tp
Rp
=
= (
= (
v
v
T
V
V
R
because of the low impedance of the SLIC output (< 1
V
–
DROP,T
RING,RMS
HR –
V
V
57
RING,pp
BATR –
V
= V
+
BATH –
V
= 45 Vrms
Tp
V
DROP,R
DROP,RT –
- V
Rp
V
SLIC-E2
DROP, RT –
SLIC-E
SLIC-S
V
V
2)
BATH
HR
.
1)
.
V
Functional Description
DC,RING
SLIC-P
BGND
V
V
BATR
RING,RMS
V
DC,RING
V
)/1.41
HR –
ezm140315.emf
= 85 Vrms,
)/1.41
2000-07-14
V
DuSLIC
BATH
V
HR
for
for
).