MC34118-S28-T

更新时间： 2024-01-21 08:25:20

品牌	Logo	应用领域
友顺 - UTC		电话
页数	文件大小	规格书
12页	297K
描述
VOICE SWITCHED SPEAKER-PHONE CIRCUIT

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MC34118-S28-T 数据手册

UNISONIC TECHNOLOGIES CO., LTD

MC34118

LINEAR INTEGRATED CIRCUIT

VOICE SWITCHED

SPEAKER-PHONE CIRCUIT

SOP-28

DESCRIPTION

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

MC34118 includes the necessary amplifiers, attenuators, level

detectors and control algorithm.

DIP-28

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.

SDIP-28

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.

Lead-free:

Halogen-free: MC34118G

MC34118L

The UTC MC34118 which requiring typically 5mA may be

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

telephone line.

FEATURES

* Attenuator gain range: 52dB (between Transmit and Receive)

* For line-powered applications : 3~6.5V low voltage operation

* For improved sensitivity :4-point signal sensing

* For Transmit and Receive paths: background noise monitors

* External resistors set microphone amplifier gain

* Mute function included

* Chip disable: active or standby operation

* During dial tone presence: dial tone detector to inhibit receive idle

mode

ORDERING INFORMATION

Ordering Number

Package

Packing

Normal

Lead Free Plating

MC34118L-D28-T

MC34118L-E28-T

MC34118L-S28-T

MC34118L-S28-R

Halogen Free

MC34118-D28-T

MC34118-E28-T

MC34118-S28-T

MC34118-S28-R

MC34118G-D28-T

MC34118G-E28-T

MC34118G-S28-T

MC34118G-S28-R

DIP-28

SDIP-28

SOP-28

Tube

Tape Reel

www.unisonic.com.tw

1 of 12

QW-R108-007,D

12 3 4 5 6 7...12

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