Datasheet Summary
Voice Switched Speakerphone circuit
! GENERAL DESCRIPTION The NJW1124 is a Voice Switched Speakerphone Circuit.
NJW1124 includes all of functions processing a high quality hands- free speakerphone system, such as the necessary amplifiers ( Microphone , Receive ,Line), attenuators, level detectors functions.
All external capacitors are sufficient small so that ceramic capacitors are applied.
! APPLICATION
- Video Door Phone
- Conference System
- Wireless Application
- Security System
! Features
- Operating voltage range
- Force to Receive, Transmit, or Idle modes
- Mode
- watching monitor
- Attenuator gain range between Transmit and Receive
- Microphone amplifier with mute function
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