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NJW1128 - Voice Switched Speakerphone Circuit

General Description

The NJW1128 is a Voice Switched Speakerphone Circuit.

free speakerphone system, such as the necessary amplifiers ( Mic , Receive ,Line, Speaker ), attenuators, level detectors functions.

Key Features

  • q q q q q q q q q Operating voltage range Attenuator gain range between Transmit and Receive Speaker amplifier Microphone amplifier with mute function Force to Receive, Transmit, or Idle modes Mode.
  • watching monitor Background noise monitor for each path 4-point signal sensing Chip disable Pin powers down the entire IC excluding the speaker amplifier q Speaker switch Pin power down the speaker amplifier q Microphone and Receive Amplifiers pinned out for flexibility q Package Outline C8 R.

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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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NJW1128 www.DataSheet4U.com Voice Switched Speakerphone Circuit with Speaker Amplifier ! GENERAL DESCRIPTION The NJW1128 is a Voice Switched Speakerphone Circuit. It includes all of functions processing a high quality hands–free speakerphone system, such as the necessary amplifiers ( Mic , Receive ,Line, Speaker ), attenuators, level detectors functions. The NJW1128 is controllable independently power-down of the speaker amplifier and the entire IC excluding the speaker amplifier. All external capacitors are sufficient small so that ceramic capacitors are applied.