PBL38620/2QNT Infineon Technologies, PBL38620/2QNT Datasheet - Page 31

• Manufacturer Part Number: PBL38620/2QNT
• Manufacturer: Infineon Technologies

Specifications of PBL38620/2QNT

• 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: Not Compliant

5.4
From
For applications where
the expression for G
5.5
From
5.6
The hybrid function can easily be implemented utilizing the uncommitted amplifier in
conventional non software programmable codec/filters. Please, refer to
impedance
combination codec/filter amplifier. As can be seen from the expression for the four-wire
to four-wire gain, G
converted by
be made to cancel by letting:
Data Sheet
G
G
G
---------------------------------- -
V
-------- -
R
RSN
TX
TX
4 2
4 2
4 4
–
–
–
+
Z
Equation [1]
Equation [1]
=
=
=
V
--------- -
Z
T
G
RX
B
–
--------- -
V
--------- -
V
V
V
2 4S
RX
RX
TR
TX
–
---------
Z
Four-Wire to Two-Wire Gain
Four-Wire to Four-Wire Gain
Hybrid Function
=
Z
Z
RX
T
B
0
R
=
=
+
TX
a current proportional to
2
–
–
-------------------------
2 G
R
to a current flowing into the same summing node. These currents can
-------- -
Z
-------- -
Z
Z
F
Z
to
to
4-4
RX
RX
E
4-2
T
T
=
1
, a voltage proportional to
L
Equation [3]
Equation [3]
2 4S
Z
simplifies to:
=
–
L
--------------- -
G
---------------------------------------------------------------- -
---------------------------------- -
0
RSN
2 4S
1
–
Z
T
G
Z
---------------------------------------------------------------- -
---------------------------------- -
2 4S
L
RSN
–
+
with
with
2
Z
R
+
T
E
E
G
F
Z
V
L
L
L
2 4S
RX
31
= 0:
= 0:
–
+
Z
is injected into the summing node of the
2
L
R
+
F
V
Z
RX
L
+
is returned to
2
R
F
V
Rev. 2.0, 2005-04-13
TX
. This voltage is
PBL 38620/2
Transmission
Figure
FlexiSLIC
10. Via
[10]
[11]
[7]
[8]
[9]