MC34118(28DIP)

更新时间： 2024-09-24 09:35:11

品牌	Logo	应用领域
友顺 - UTC		电话电信光电二极管电信电路电话电路
页数	文件大小	规格书
14页	316K
描述
Speaker Phone Circuit, Bipolar, PDIP28,

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中文翻译

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MC34118(28DIP) 数据手册

UTC MC34118 LINEAR INTEGRATED CIRCUIT

VOICE SWITCHED

SPEAKER-PHONE CIRCUIT

SOP-28

DESCRIPTION

The UTC MC34118 voice switched speaker-phone

integrated circuit incorporates the necessary amplifiers,

attenuators, level detectors and control algorithm to form the

heart of a high quality hands-free speaker-phone system. It

includes a microphone amplifier with adjustable gain and

mute control. Transmit and Receive attenuators which

operate in a complementary manner, level detectors at both

DIP-28

input and output of both attenuators, and background noise

monitors for both the transmit and receive channels. A dial

tone detector prevents the dial tone from being attenuated by

the receive background noise monitor circuit. Also two line

driver amplifiers which can be used to form a hybrid network

in conjunction with an external coupling transformer.

high-pass filter can be used to filter out 60Hz noise in the

receive channel, or for other filtering functions. A chip disable

pin permits powers down the entire circuit to converse power

on long loops where loop current is at a minimum. The UTC

MC34118 may be operated from a power supply, or it can be

powered from the telephone line, requiring typically 5mA. The

UTC MC34118 can be interfaced directly to TIP and

SDIP-28

*Pb-free plating product number: MC34118L

RING( through

a coupling transformer) for stand-alone

operation, or it can be used in conjunction with a handset

speech network and/or other features of a feature phone.

FEATURES

*Improved attenuator gain range: 52dB between Transmit

and Receive

*Low voltage operation for line-powered applications(3~6.5V)

*4-point signal sensing for improved sensitivity

*Background noise monitors for both Transmit and Receive

paths

*Microphone amplifier gain set by external

Resistors-Mute function included

*Chip disable for active/standby operation

*On board filter pinned-out for user defined

function

*Dial tone detector to inhibit receive idle mode

during dial tone presence

ABSOLUTE MAXIMUM RATINGS^(Ta=25°C,Voltages referred to pin 22)

PARAMETER

SYMBOL

Vcc

VALUE

-1~7

UNIT

°C

Supply Voltage

Voltage at Pin 3

V12

-1~Vcc+1

-1~Vcc+0.5

-0.5~Vcc+0.5

-65~150

Voltage at Pin 12( mute)

Voltage at Pin 13( VLC)

Voltage at Pin 9, Pin 21, and Pin 2

Storage temperature

V13

V9, 21, 2

Tstr

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R108-007,B

12 3 4 5 6 7...14

中文翻译

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与MC34118(28DIP)相关器件

型号	品牌	获取价格	描述	数据表
MC34118(28SOP)	UTC	获取价格	Speaker Phone Circuit, Bipolar, PDSO28,
MC34118_09	UTC	获取价格	VOICE SWITCHED SPEAKER-PHONE CIRCUIT
MC34118_15	UTC	获取价格	VOICE SWITCHED SPEAKER-PHONE CIRCUIT
MC34118A	UTC	获取价格	voice switched speaker-phone circuit
MC34118-D28-T	UTC	获取价格	VOICE SWITCHED SPEAKER-PHONE CIRCUIT
MC34118DW	MOTOROLA	获取价格	VOICE SWITCHED SPEAKERPHONE CIRCUIT
MC34118DWR2	MOTOROLA	获取价格	SPEAKER PHONE CIRCUIT, PDSO28, PLASTIC, SOIC-28
MC34118DWR3	MOTOROLA	获取价格	SPEAKER PHONE CIRCUIT, PDSO28, PLASTIC, SOIC-28
MC34118-E28-T	UTC	获取价格	VOICE SWITCHED SPEAKER-PHONE CIRCUIT
MC34118G-D28-T	UTC	获取价格	VOICE SWITCHED SPEAKER-PHONE CIRCUIT

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