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PBL3798 - Subscriber Line Interface Circuit

Description

PBL 3798 is an analog Subscriber Line Interface Circuit (SLIC), which is fabricated in a 75 V bipolar, monolithic process.

The programmable, constant current feed circuit incorporates a switch mode regulator to minimize on-chip power dissipation.

Features

  • On-chip switch mode regulator to minimize power dissipation.
  • Programmable, constant current feed.
  • Line feed characteristics independent of battery variations.
  • Tip-ring polarity reversal function.
  • Tip and ring open circuit state; tip open with ring active state.
  • Detectors: - programmable loop current/ring ground detector - ground key detector - ring trip detector.
  • Ring and test relay drivers.
  • Line terminating impedance, comp.

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Datasheet Details

Part number PBL3798
Manufacturer Ericsson
File Size 237.55 KB
Description Subscriber Line Interface Circuit
Datasheet download datasheet PBL3798 Datasheet

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Other Datasheets by Ericsson

Part Number Description
PBL3798-2 Subscriber Line Interface Circuit
PBL3796 Subscriber Line Interface Circuit
PBL3796-2 Subscriber Line Interface Circuit
PBL3799 Subscriber Line Interface Circuit
PBL3799-2 Subscriber Line Interface Circuit

Full PDF Text Transcription

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March 1997 www.DataSheet4U.com PBL 3798, PBL 3798/2 Subscriber Line Interface Circuit Description PBL 3798 is an analog Subscriber Line Interface Circuit (SLIC), which is fabricated in a 75 V bipolar, monolithic process. The programmable, constant current feed circuit incorporates a switch mode regulator to minimize on-chip power dissipation. A stand-by state further reduces idle power dissipation, while allowing the supervisory functions to be active. Tip-ring polarity is reversible without altering SLIC supervisory and voice frequency (vf) functions. Tip and ring outputs can be set to high impedance states. These and other operating states are activated via a parallel, four bit control word. An external resistor controls the off-hook detector threshold current.
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