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PBL386112QNT PDF预览

PBL386112QNT

更新时间: 2024-11-09 22:12:31
品牌 Logo 应用领域
爱立信 - ERICSSON /
页数 文件大小 规格书
18页 147K
描述
Subscriber Line Interface Circuit

PBL386112QNT 数据手册

 浏览型号PBL386112QNT的Datasheet PDF文件第2页浏览型号PBL386112QNT的Datasheet PDF文件第3页浏览型号PBL386112QNT的Datasheet PDF文件第4页浏览型号PBL386112QNT的Datasheet PDF文件第5页浏览型号PBL386112QNT的Datasheet PDF文件第6页浏览型号PBL386112QNT的Datasheet PDF文件第7页 
February 2000  
PBL 386 11/2  
Subscriber Line  
Interface Circuit  
Description  
Key Features  
• Selectable overhead voltage principle  
– All adaptive: The overhead voltage  
follows 0.6 VPeak < signals < 5 VPeak  
– Semi adaptive: The overhead  
The PBL 386 11/2 Subscriber Line Interface Circuit (SLIC) is a 90 V bipolar inte-  
grated circuit for use in DAML, FITL and other telecommunications equipment. The  
PBL 386 11/2 has been optimized for low total line interface cost and a high degree  
of flexibility in different applications.  
The PBL 386 11/2 emulates a transformer equivalent dc-feed, programmable  
between 2x25 and 2x900 , with short loop current limiting adjustable to max  
65 mA.  
.
voltage follows 2.5 VPeak < signals <  
5 VPeak  
.
• Metering 1.6 Vrms  
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 11/2 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 11/2 package are 28-pin PLCC and 28 pin SSOP.  
• 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 @ -48V battery  
feed  
• Constant loop voltage for line  
leakage <5 mA  
• On-hook transmission  
• Full longitudinal current capability  
during on-hook  
Ring Relay  
RRLY  
Driver  
• Programmable loop & ring-trip detector  
threshold  
DT  
C1  
Ring Trip  
DR  
Comparator  
• Ground key detector  
C2  
Input  
Decoder and  
Control  
• Analog temperature guard  
• Silent polarity reversal  
• Integrated Ring Relay Driver  
TIPX  
C3  
Ground Key  
Detector  
RINGX  
VCC  
DET  
HP  
TS  
Line Feed  
Controller  
and  
Longitudinal  
Signal  
PSG  
LP  
Two-wire  
Interface  
REF  
PLC  
PBL  
VEE  
Suppression  
386 11/2  
AOV  
Off-hook  
Detector  
PLD  
VBAT2  
AGND  
VTX  
PBL 386 11/2  
VBAT  
VF Signal  
Transmission  
RSN  
VEE  
BGND  
28-pin plastic PLCC and 28-pin SSOP  
Figure 1. Block diagram.  
1

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