PBL38650/2QNT Infineon Technologies, PBL38650/2QNT Datasheet - Page 40

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

Specifications of PBL38650/2QNT

• 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: PBL38650/2QNTT; SP000007905

6.2
With the POV function the overhead voltage can be increased. If the POV pin is left open
the overhead voltage is internally set to 3.2
resistor
set to higher values, typical values can be seen in
corresponding
frequency 1000 Hz.
Observe that the four-wire output terminal
the two- to four-wire gain is -6.02 dB, 6.4
Signal levels between 6.4 and 12.8
PTG shorted so that the gain
•
•
•
has to be recalculated if the PTG is shorted.
Please note that the maximum signal current at the two-wire side can not be higher than
29 mA.
How to use POV:
1. Decide what overhead voltage (
2. In
3. If the overhead voltage exceeds 6.4
Figure 14
Data Sheet
Z
R
G
the overhead voltage exceeds 3.2
-12.04 dB by connecting pin PTG to AGND. Please note, that the 2-wire impedance,
R
T
R
R
4 - 4
12
10
11
Figure 14
9
8
7
6
5
4
3
2
0
1
and the 4-wire to 4-wire gain has to be recalculated.
0
R
OV
Programmable Overhead Voltage (POV)
is connected between the POV pin and AGND, the overhead voltage can be
5
Programmable Overhead Voltage (POV).
V
TRO
the corresponding
10
(signal headroom) are typical values for THD < 1% and the signal
15
20
G
2-4S
25
becomes -12.04 dB. Please note that:
V
R
V
30
R
TRO
OV
OV
Peak
V
(kohm)
Peak
for the decided
) is needed. The POV function is only needed if
35
on the two-wire side can be handled with the
V
V
40
V
.
V
Peak
Peak
TX
Peak
40
cannot handle more than 3.2
, the
is maximum also for the two-wire side.
in off-hook and 1.3
45
G
2-4S
V
50
TRO
R
gain has to be changed to
L
Figure
55
can be found.
= 600
60
14. The
Rev. 2.0, 2005-04-14
V
or Infinite
Peak
PBL 38650/2
Battery Feed
on-hook.. If a
FlexiSLIC
V
POV
of f -hook
on-hook
Peak
R
OV
. So if
and