PBL38772/1 Ericsson, PBL38772/1 Datasheet - Page 11

• Manufacturer Part Number: PBL38772/1
• Description: Subscriber Line Interface Circuit
• Manufacturer: Ericsson

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Figure 8. Single channel subscriber line interface with PBL 387 72/1 and Combo I type codec.
RESISTORS:
(values according to IEC-63 E96 series)
R
R
R
R
R
R
R
R
R
R
R
Line protection resistor.
LD
LC
RT
REF
RX
VR
TX
T
FB
B
F1
4
=R
RING
= 49.9 k
= 18.7 k
= 69.8 k
= 15.0 k
= 232 k
= 200 k
= 28.0 k
= 104 k
= 73.2 k
= 110 k
VT B
TIP
VB
F2
= 40
VB
R
R
F1
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
F2
D
B
1/10 W
1/10 W
1/10 W
1/10 W
1/10 W
1/10 W
1/10 W
1/10 W
1/10 W
1/10 W
match,
O VP
C
D
G G
B B
D
T B
PBL 387 72/1 shortform
C
C
T B
B
C
C
C
C
R C
T C
H P
L P
C
S P R
CAPACITORS:
(values according to IEC-63 E6 series)
C
C
C
C
C
C
C
C
C
C
C
TB
B
VCC
TC
RC
HP
LP
GG
RING
VR
SPR
Advance Information
B W
B W
B W
H P
H P
H P
H P
H P
B G N D
R IN G X
T IP X
V TB A T
V B A T
V TB
S P R
B W
B W
L P
PBL38772
= 150nF 100 V 20%
= 100nF 100 V 20%
= 100nF
= 1.0nF 100 V 20%
= 1.0nF 100 V 20%
= 33nF 100 V 20%
= 470nF 100 V 20%
= 220nF 100 V 20%
= 470nF
= 0.33µF
= optional
10 V 20%
10 V 20%
10 V 20%
10 V 20%
C R IN G
A G N D
R S N
V C C
V TX
D E T
P LD
P LD
P R T
P LC
R E F
V R
C 1
C 2
C 3
Rev. P5
C
R
R
R
R
R IN G
R T
L D
L C
R E F
SY STEM CO NTRO L
R
T
INTER FACE
Feb. 14, 2001
R
R
T X
R X
C
V C C
R
R
B
V R
VCC
C
V R
DIODES:
D
OVP:
Secondary protection clamp (e g
Bourns/Power Innovations TISP PBL3,
which serves two lines). The ground
terminals of the secondary protection
should be connected to the common
ground on the Printed Board Assembly with
a track as short and wide as possible,
preferably to a ground plane.
B
= D
VR
TB
= D
BB
CO D EC/
R
=1N4448
+
-
-
+
0
Filter
F B
0
11 of 14
RXP CM bus
TX PCM bus
DX
DR