D34018

Category:

Telephone Circuit

key word:

Integrated circuit

Description

The single-piece telephone talking circuit incorporates required amplifiers, attenuators, and several control functions, including transmit and receive attenuators, a background noise level detection system, and a attenuator control system that responds to transmit and receive electrical levels better than background noise. A high quality hands-free handle-type loudspeaker telephone system can be made with a peripheral blocking container.

Operating voltage range

6V ～ 11V

Accept attenuator gain

40dB ～ 48dB

Transmit attenuator gain

40dB ～ 48dB

Power amplifier gain

33dB ～ 35dB

MIC amplifier gain

32.5dB ～ 35dB

Packaging form

SOP28