PBL38650/2QNS Infineon Technologies, PBL38650/2QNS Datasheet - Page 35

• Manufacturer Part Number: PBL38650/2QNS
• Description: IC LINE INTERFACE SLIC PLCC-28
• Manufacturer: Infineon Technologies
• Series: FlexiSLIC™r

Specifications of PBL38650/2QNS

• Function: Subscriber Line Interface Concept (SLIC)
• Number Of Circuits: 1
• Voltage - Supply: 5V
• Current - Supply: 2.8mA
• Power (watts): 730mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-PLCC
• Includes: Current Feeding, Ground Key Detector, Ring Relay Driver
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Interface: -
• Other names: SP000007904

components have an influence on the power supply rejection ratio (PSRR) from
the two-wire side at sub audio frequencies.At these frequencies
transversal to longitudinal balance in the SLIC.
C
table below, for the chosen value of
Table 9
Symbol
R
R
C
T-L bal. @
200 Hz
C
6
The PBL 38650/2 SLIC emulates resistive loop feed, programmable between 2x50
and 2x900
current has a slight slope corresponding to 2x30 , see
The open loop voltage measured between the TIPX and RINGX terminals tracks the
battery voltage
programmable with a resistor
ground. Please refer to
programmed signal overhead voltage
open loop conditions according to
V
Refer to
changed when line corrent is approaching open loop conditions. To ensure maximum
open loop voltage, even with a leaking telephone line, this occurs at a line current of
approximately 6 mA. When the overhead voltage has changed, the line voltage is kept
nearly constant with a steep slope corresponding to 2x25
The vitual battery overhead,
voltage and the crossing point of all possible resistive feeding slopes, see
reference J. The virtual battery overhead is a theoretical constant needed to be able to
calculate the feeding characteristics.
Data Sheet
Feed
SG
TR
LP
LP
HP
. The typical value of the transversal to longitudinal balance at 200 Hz is given in the
(at
I
L
Table 10
= 0 mA) = |
Battery Feed
, with adjustable current limitation. In the current limited region the loop
Feeding Setup
2x50
0
150
-46
47
V
BAT
for the typical value of
V
BAT
. The signalling headroom, or overhead voltage
Chapter
| -
V
OH
V
2x200
60.4
100
-46
150
R
OHvirt
OV
6.2. The battery voltage overhead,
connected between terminal POV on the SLIC and
, is defined as the difference between the battery
C
LP
V
.
TRO
Value
35
.
2x400
147
47
-43
150
V
V
OH
OH
Table 9
and
defines the TIP and RING voltage at
V
OHvirt
Figure 13
suggests a suitable value for
2x800
301
22
-36
150
(reference G in
. The overhead voltage is
C
LP
reference B.
V
Rev. 2.0, 2005-04-14
also influences the
OH
, depends on the
Unit
k
nF
dB
nF
PBL 38650/2
Battery Feed
FlexiSLIC
Figure
Figure 13
V
TRO
V
BAT
, is
13).
to