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What is PBL38610-2?

This electronic component, produced by the manufacturer "Ericsson", performs the same function as "Subscriber Line Interface Circuit".


PBL38610-2 Datasheet PDF - Ericsson

Part Number PBL38610-2
Description Subscriber Line Interface Circuit
Manufacturers Ericsson　
Logo Ericsson Logo　


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February 1999
PBL 386 10/2
Subscriber Line
Interface Circuit
Description
The PBL 386 10/2 Subscriber Line Interface Circuit (SLIC) is a 90 V bipolar integrated
circuit for use in PBX, Terminal adapters and other telecommunications equipment.
The PBL 386 10/2 has been optimized for low total line interface cost and a high
degree of flexibility in different applications.
The PBL 386 10/2 emulates a transformer equivalent dc-feed, programmable
between 2x25 Ω and 2x900 Ω, with short loop current limiting adjustable to max
65 mA.
A second lower battery voltage may be connected to the device to reduce short
loop power dissipation. The SLIC automatically switches between the two battery
supply voltages without need for external components or external control.
The SLIC incorporates loop current, ground key and ring trip detection functions. The
PBL 386 10/2 is compatible with loop start signalling.
Two- to four-wire and four- to two-wire voice frequency (vf) signal conversion is
accomplished by the SLIC in conjunction with either a conventional CODEC/filter or
with a programmable CODEC/filter, e.g. SLAC, SiCoFi, Combo II. The programmable
line terminating impedance could be complex or real to fit every market.
Longitudinal line voltages are suppressed by a feedback loop in the SLIC and the
longitudinal balance specifications meet Bellcore TR909 requirements.
The PBL 386 10/2 package is 28-pin PLCC.
DT
DR
TIPX
RINGX
HP
TS
VEE
AOV
VBAT2
VBAT
BGND
Two-wire
Interface
Ring Trip
Comparator
Ground Key
Detector
Line Feed
Controller
and
Longitudinal
Signal
Suppression
Off-hook
Detector
VF Signal
Transmission
Ring Relay
Driver
Input
Decoder and
Control
RRLY
C1
C2
C3
VCC
DET
PSG
LP
REF
PLC
PLD
AGND
VTX
RSN
VEE
Key Features
• Selectable overhead voltage principle
– All adaptive: The overhead voltage
follows 0.6 VPeak < signals < 5 VPeak.
– Semi adaptive: The overhead voltage
follows 2.5 VPeak < signals < 5 VPeak.
• Metering 1.6Vrms
• High and low battery with automatic
switching
• Battery supply as low as -10V
• Only +5V in addition to GND
and battery (VEE optional)
• 35 mW on-hook power dissipation in
active state
• Long loop battery feed tracks VBat for
maximum line voltage
• 44V open loop voltage @ -48 V battery
feed
• Constant loop voltage for line
leakage <5 mA
• On-hook transmission
• Full longitudinal current capability
during on-hook
• Programmable loop & ring-trip detector
threshold
• Ground key detector
• Analog temperature guard
• Integrated Ring Relay Driver
Figure 1. Block diagram.
28-pin plastic PLCC
1

line_dark_gray
PBL38610-2 equivalent
Parameter
Four-wire to two-wire, g4-2
Four-wire to four-wire, g4-4
Insertion loss
Two-wire to four-wire, G2-4
Four-wire to two-wire, G4-2
Gain tracking
Two-wire to four-wire RLDC ≤ 2 kΩ
Four-wire
to
two-wire
R
LDC
≤
2
kΩ
Noise
Idle channel noise at two-wire
(TIPX-RINGX)
Harmonic distortion
Two-wire to four-wire
Four-wire to two-wire
Battery feed characteristics
Constant loop current, ILConst
PBL 386 10/2
Ref
fig Conditions
6 relative to 0 dBm, 1.0 kHz. EL = 0 V
0.3 kHz < f < 3.4 kHz
f = 8 kHz, 12 kHz,
16 kHz
6 relative to 0 dBm, 1.0 kHz. EL = 0 V
0.3 kHz < f < 3.4 kHz
Min
-0.15
-1.0
-1.0
-0.15
Typ
-0.2
-0.3
Max
0.15
0
0
0.15
Unit
dB
dB
dB
dB
6 0 dBm, 1.0 kHz, Note 5
G2-4 = 20 • Log
VTX
VTR
,ERX = 0
6 0 dBm, 1.0 kHz, Notes 5, 6
V
G = 20 • Log TR ,E = 0
E4-2 L
RX
6 Ref. -10 dBm, 1.0 kHz, Note 7
-40 dBm to +3 dBm
-55 dBm to -40 dBm
6 Ref. -10 dBm, 1.0 kHz, Note 7
-40 dBm to +3 dBm
-55 dBm to -40 dBm
-6.22 -6.02 -5.82 dB
-0.2 0.2 dB
-0.1 0.1 dB
-0.2 0.2 dB
-0.1 0.1 dB
-0.2 0.2 dB
C-message weighting
Psophometrical weighting
Note 8
7 12 dBrnC
-85 -78 dBmp
6 0 dBm, 1.0 kHz test signal
0.3 kHz < f < 3.4 kHz
-50 dB
-50 dB
12
ILProg
=
500
R
LC
18 < ILProg < 65 mA
0.92 ILProg ILProg
1.08 ILProg mA
Figure 6.
Frequency response, insertion loss,
gain tracking.
1
ωC
<< RL, RL = 600 Ω
RT = 120 kΩ, RRX = 120 kΩ
C
TIPX
VTX
RL
VTR ILDC PBL 386 10/2 RT
EL
RINGX
RSN
RRX
E RX
VTX
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for PBL38610-2 electronic component.


Information Total 18 Pages
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Featured Datasheets

Part NumberDescriptionMFRS
PBL38610-2The function is Subscriber Line Interface Circuit. EricssonEricsson

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