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PBL3853 - Universal Speech Circuit

Description

The PBL 3853 is a biopolar integrated speech circuit with specific parameters making it highly suitable to be used as a line interface and speech circuit in a telephone line powered electronic payphone.

Features

  • Low own current consumption.
  • Can operate both with active and passive impedance towards the line.
  • Derives a high current from the line for auxiliary functions, 12 mA at 16 mA line current.
  • Separate mute inputs for transmitter and receiver (receiver cut off).
  • Line length regulation possible (line loss compensation.
  • Comes in 18 pin DIP and 20-pin SO package.
  • High line current operation, max. 130 mA.
  • Especially suitable for pa.

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Datasheet preview – PBL3853

Datasheet Details

Part number PBL3853
Manufacturer Ericsson
File Size 256.04 KB
Description Universal Speech Circuit
Datasheet download datasheet PBL3853 Datasheet
Additional preview pages of the PBL3853 datasheet.

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Full PDF Text Transcription

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May 1996 PBL 3853 Universal Speech Circuit Description The PBL 3853 is a biopolar integrated speech circuit with specific parameters making it highly suitable to be used as a line interface and speech circuit in a telephone line powered electronic payphone. Emphasis has been put on low current consumption in the IC thus facilitating that a greater part of the available line current can be used to power other electrical functions in the design. From a minimum line current of 16 mA, 12 mA at 4.5 V can be used to power auxiliary functions. The circuit can optionally create an active impedance towards the telephone line, set by external passive components, to reduce the current consumption for the transmitted signal.
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