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TEA1110A - LOW VOLTAGE VERSATILE TELEPHONE TRANSMISSION

General Description

The UTC TEA1110A is a versatile telephone transmission circuit providing full speech and line interface functions in electronic telephone sets.

This device works at a line voltage which can be as low as 1.6V DC (with reduced performance) to enable parallel connection of telephone sets.

Key Features

  • S.
  • Low DC line voltage; operates down to 1.6V (excluding voltage drop over external polarity guard).
  • Voltage regulator with adjustable DC voltage.
  • Provides a supply for external circuits.
  • Symmetrical high impedance inputs (64kΩ) for dynamic, magnetic or piezo-electric microphones.
  • Asymmetrical high impedance input (32kΩ) for electric microphones.
  • DTMF input with confidence tone.
  • MUTE input for pulse or DTMF dialling.
  • Receiving amplifier for dynamic, magne.

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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.

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UNISONIC TECHNOLOGIES CO., LTD TEA1110A LINEAR INTEGRATED CIRCUIT LOW VOLTAGE VERSATILE TELEPHONE TRANSMISSION CIRCUIT WITH DIALLER INTERFACE SOP-14  DESCRIPTION The UTC TEA1110A is a versatile telephone transmission circuit providing full speech and line interface functions in electronic telephone sets. This device works at a line voltage which can be as low as 1.6V DC (with reduced performance) to enable parallel connection of telephone sets. It also realizes electronic switching between speeches and dialling. The UTC TEA1110A is ideal for applications, such as line powered telephone sets, cordless telephones, and fax machines, answering machines.  FEATURES * Low DC line voltage; operates down to 1.