PBL386202QNAXT Infineon Technologies, PBL386202QNAXT Datasheet - Page 38

• Manufacturer Part Number: PBL386202QNAXT
• Manufacturer: Infineon Technologies

Specifications of PBL386202QNAXT

• Number Of Channels: 1
• On-hook Transmission: Yes
• Polarity Reversal: Yes
• On-chip Ring Relay Driver: Yes
• Operating Temp Range: 0C to 70C
• Package Type: PLCC
• Loop Current Limit: 30mA
• Operating Temperature Classification: Commercial
• Pin Count: 28
• Mounting: Surface Mount
• Operating Supply Voltage (max): 5.25/-58V
• Lead Free Status / RoHS Status: Compliant

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 1.1
hook and off-hook. If a resistor
overhead voltage can be set to higher values, typical values can be seen in
The
the signal frequency 1000 Hz.
Observe that the four-wire output terminal
the two- to four-wire gain is 0 dB, 3.2
levels between 3.2 and 6.4
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
9 mA.
How to use POV:
1. Decide what overhead voltage (
2. In
If the overhead voltage exceeds 3.2
by connecting pin PTG to AGND. Please note, that the 2-wire impedance,
4-wire to 4-wire gain has to be recalculated.
Figure 13
Data Sheet
Z
R
G
the overhead voltage exceeds 1.1
R
T
R
4 - 4
OV
Figure 13
7
6
5
4
3
2
0
1
0
and corresponding
Programmable Overhead Voltage (POV)
Programmable Overhead Voltage (POV).
the corresponding
10
G
2-4S
V
V
TRO
becomes -6.02 dB. Please note that:
Peak
R
20
OV
(signal headroom) are typical values for THD < 1% and
on the two-wire side can be handled with the PTG
V
R
is connected between the POV pin and AGND, the
V
TRO
V
OV
Peak
V
Peak
Peak
for the decided
R
) is needed. The POV function is only needed if
OV
, the
is maximum also for the two-wire side. Signal
38
V
(kohm)
.
V
TX
30
Peak
G
cannot handle more than 3.2
2-4S
. The overhead voltage is equal in on-
gain has to be changed to -6.02 dB
V
40
TRO
R
L
can be found.
= 600
Rev. 2.0, 2005-04-13
50
or Infinite
PBL 38620/2
Battery Feed
FlexiSLIC
R
V
Figure
R
Peak
and the
POV
60
. So if
13.