PBL38611-2 Datasheet | Ericsson

Description The PBL 386 11/2 Subscriber Line Interface Circuit (SLIC) is a 90 V bipolar integrated circuit for use in DAML, FITL and other telemunications 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 Ω and 2x900 Ω, with short loop current limiting adjustable to max 65 m A. 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 ponents or external control. The SLIC incorporates loop current, ground key and ring trip detection functions. The PBL 386 11/2 is patible with loop start signalling. Two- to four-wire and four- to two-wire voice frequency (vf) signal conversion is acplished by the SLIC in conjunction with either a conventional CODEC/filter or with a programmable CODEC/filter, e.g. SLAC, Si Co Fi, bo II. The programmable line terminating impedance could be plex 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. 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 1.6 Vrms - High and low battery with automatic switching - Battery supply as low as -10V - Only +5V in addition to GND and battery (VEE optional) - 35 m W 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 m A - On-hook transmission Ring Relay Driver RRLY - Full longitudinal current capability during...