PBL38640/2SOT Infineon Technologies, PBL38640/2SOT Datasheet - Page 9

• Manufacturer Part Number: PBL38640/2SOT
• Description: IC LINE INTERFACE SLIC PDSO-24
• Manufacturer: Infineon Technologies
• Series: FlexiSLIC™r

Specifications of PBL38640/2SOT

• Function: Subscriber Line Interface Concept (SLIC)
• Number Of Circuits: 1
• Voltage - Supply: 5V
• Current - Supply: 2.8mA
• Power (watts): 730mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: DSO-24
• Includes: Current Feeding, Ground Key Detector, Ring Relay Driver
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Interface: -
• Other names: PBL38640/2SOTT; SP000007903

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The PBL 38640/2 Subscriber Line Interface Circuit (SLIC) is a 90 V bipolar integrated
circuit for use in PBX, Terminal adapters and other telecommunications equipment. The
PBL 38640/2 SLIC has been optimized for low total line interface cost and for a high
degree of flexibility in different applications.
The PBL 38640/2 SLIC emulates resistive loop feed, programmable between 2x50
and 2x900
current limited region the loop feed is nearly constant current with a slight slope
corresponding to 2x30 k .
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 38640/2 is compatible with both loop and ground 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, for example SiCoFi PEB 2466. The programmable two-
wire impedance, complex or real, is set by a simple external network.
Longitudinal voltages are suppressed by a feedback loop in the SLIC and the
longitudinal balance specifications meet Bellcore TR909 requirements.
The PBL 38640/2 SLIC package options are 24-pin SSOP, 24-pin PDSO or 28-pin
PLCC.
Data Sheet
Basic functionality Central Office Line card
Digital Loop Carriers (DLC)
Typical Applications
Description
, with short loop current limiting adjustable to maximum 45 mA. In the
9
Rev. 2.0, 2005-04-14
PBL 38640/2
FlexiSLIC
Overview