EEWORLDEEWORLDEEWORLD

Part Number

Search

MC34118L-E28-T

Description
VOICE SWITCHED SPEAKER-PHONE CIRCUIT
File Size361KB,15 Pages
ManufacturerUNISONIC TECHNOLOGIES CO.,LTD
Websitehttp://www.unisonic.com.tw/
Download Datasheet Compare View All

MC34118L-E28-T Overview

VOICE SWITCHED SPEAKER-PHONE CIRCUIT

UNISONIC TECHNOLOGIES CO., LTD
MC34118
VOICE SWITCHED
SPEAKER-PHONE CIRCUIT
DESCRIPTION
DIP-28
LINEAR INTEGRATED CIRCUIT
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.
SDIP-28
SOP-28
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
Lead Free
-
MC34118L-E28-T
-
-
Halogen Free
MC34118G-D28-T
MC34118G-E28-T
MC34118G-S28-T
MC34118G-S28-R
Package
DIP-28
SDIP-28
SOP-28
SOP-28
Packing
Tube
Tube
Tube
Tape Reel
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
1 of 15
QW-R108-007.F

MC34118L-E28-T Related Products

MC34118L-E28-T MC34118_15 MC34118G-D28-T MC34118G-S28-R MC34118G-S28-T MC34118G-E28-T
Description VOICE SWITCHED SPEAKER-PHONE CIRCUIT VOICE SWITCHED SPEAKER-PHONE CIRCUIT VOICE SWITCHED SPEAKER-PHONE CIRCUIT VOICE SWITCHED SPEAKER-PHONE CIRCUIT VOICE SWITCHED SPEAKER-PHONE CIRCUIT VOICE SWITCHED SPEAKER-PHONE CIRCUIT
How can I delete the keyboard icon in the bottom line of the self-made dialog box developed by dopod700 and allow operations?
I added a dialog box to the resource, and displayed it in the function dlg.DoModal(). Why is there a keyboard icon in the bottom row? And when I click it on the screen, the entire keyboard keys will a...
laixianzhu Embedded System
msp430G2553 touch button problem
[size=4]I drew a circuit board and made a touch button related to msp430g2553. I used the program provided by TI (structure.c, structure .h, CTS_HAL.c, etc.). I found that there are two problems with ...
hjl240 Microcontroller MCU
Show the process of WEBENCH design + design of induction sensor
[i=s] This post was last edited by Pilizhihuo on 2014-8-17 21:27 [/i] Webench can be used to easily design an inductance-to-digital converter. Using coils and springs as inductive sensors has the foll...
霹雳之火 Analogue and Mixed Signal
Has the Android platform of SIRF been developed?
As the title says, does anyone know the details?...
silentfire Embedded System
What filter is suitable for DDS?
Hello everyone: The DDS I am using now is AD9833. As shown in the figure above, the output uses an inverting amplifier to amplify the sine wave, but I found that the waveform has a sawtooth component....
PSIR Analog electronics

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1582  1523  1452  2250  2320  32  31  30  46  47 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号