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UBA2051 - (UBA2050) One-chip telephone ICs with speech / dialler and ringer functions

General Description

The ICs UBA2050, UBA2050A, UBA2051, UBA2051A and UBA2051C contain all the functions needed to build a fully electronic telephone set.

In many places in the text, figures and tables, the description is not applicable for all the five types, but only for one or two or for a combination.

Key Features

  • Speech/transmission part.
  • Low DC line voltage; operates down to 1.45 V (excluding voltage drop over external polarity guard).
  • Line voltage regulator with adjustable DC voltage.
  • Regulated 3.3 V supply (VDD) for the dialler part and peripherals compatible with:.
  • Speech mode.
  • Ringer mode.
  • Trickle mode.
  • Unregulated supply (VCC) for the transmission part and peripherals.
  • Transmit stage with:.
  • Microphone amplifier with s.

📥 Download Datasheet

Datasheet Details

Part number UBA2051
Manufacturer NXP Semiconductors
File Size 292.90 KB
Description (UBA2050) One-chip telephone ICs with speech / dialler and ringer functions
Datasheet download datasheet UBA2051 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
INTEGRATED CIRCUITS DATA SHEET UBA2050(A); UBA2051(A;C) One-chip telephone ICs with speech, dialler and ringer functions Product specification Supersedes data of 1998 Mar 24 File under Integrated Circuits, IC03 2000 May 19 Philips Semiconductors Product specification One-chip telephone ICs with speech, dialler and ringer functions FEATURES Speech/transmission part • Low DC line voltage; operates down to 1.45 V (excluding voltage drop over external polarity guard) • Line voltage regulator with adjustable DC voltage • Regulated 3.3 V supply (VDD) for the dialler part and peripherals compatible with: – Speech mode – Ringer mode – Trickle mode.