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台湾UTC IC MC34118L DIP-28

  • 联系人: 刘小姐
  • 电 话: 0512-65874200,0512-65874900
  • 手 机:13818272380,13817628855
  • E-mail:skg@vip.163.com
产品详细信息
型号: MC34118L DIP-28 品牌/商标: UTC
生产厂家: 台湾 产品类别: UTC- Integrated Circuits
商品介绍:

台湾UTC IC MC34118L DIP-28

34118.pdf

VOICE SWITCHED SPEAKER-PHONE CIRCUIT

  

DESCRIPTION 

 

As a voice switched speaker-phone integrated circuit, the UTC

MC34118 includes the necessary amplifiers, attenuators, level

detectors and control algorithm.

To form the UTC MC34118’s internal circuit, there is an internal

microphone amplifier with adjustable gain and mute control, internal

transmit and Receive attenuators (operate in a complementary

manner), level detectors at both input and output of both attenuators,

and background noise monitors for both the transmit and receive channels.

 

The dial tone can be pretended from being attenuated by the

receive background noise monitor circuit by a dial tone detector.

There are also two line driver amplifiers which can be used to form a

hybrid network in conjunction with an external coupling transformer. A

high-pass filter can be used for other filtering functions, and especially

to filter out 60Hz noise in the receive channel.

The UTC MC34118 which requiring typically 5mA may be

operated from a power supply, or it can be powered from the telephone line.


联系我们

  • 地址:江苏省苏州市工业园区东长路18号41栋1302室
  • 电话:0512-65874200,0512-65874900
  • 手机:13818272380,13817628855
  • Mail:skg@vip.163.com
  • QQ:349240205,737167316,535537954
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