MT91610AQ Datasheet

IC型號：
MT91610AQ
PDF描述：
Analog Ringing SLIC
文件大小：
70.37KB
PDF頁數(shù)：
18頁
芯片廠家：
MITEL

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MT91610

Analog Ringing SLIC

Preliminary Information

Features

鈥?/div>

Transformerless 2W to 4W conversion

Controls battery feed to line

Programmable line impedance

Programmable network balance impedance

Off-hook and dial pulse detection

Protects against GND short circuit

Programmable gain

Programmable constant current mode with

constant voltage fold over

Transformerless balanced ringing with

automatic ring trip circuit. No mechanical relay

Supports low voltage ringing

Line polarity reversal

On-hook transmission

Power down and wake up capability

Meter pulse injection

Ground Key detection

DS5181

ISSUE 2

February 2000

Package Information

MT91610AQ

36 Pin QSOP Package

-40擄C to +85擄C

Description

The Mitel MT91610, with an external bipolar driver

(Figure 4), provides an interface between a switching

system and a subscriber loop. The functions

provided by the MT91610 include battery feed,

programmable constant current with constant voltage

fold over for long loop, 2W to 4W conversion, off-

hook and dial pulse detection, direct balance ringing

with built in ring tripping, unbalance detection, user

de鏗乶able line and network balance impedance鈥檚 and

gain, and power down and wake up. The device is

fabricated as a CMOS circuit in a 36 pin QSOP

package.

Applications

Line interface for:

鈥?PABX

鈥?Intercoms

鈥?Key Telephone Systems

鈥?Control Systems

GTX1 ESE

ESI

GTX0

Tip/Ring Drive

Controller

Audio Gain & Network

Balance Circuit

TIP

RING

RF1, RF2

Line Sense

2 W to 4 W

Conversion & Line

Impedance

Over-Current

Protection Circuit

CP5

Line

Reverse

Driver

CP4

CP6

CP7

Ring Drive

Controller

Loop Supervision

CP2

CP3

VDD

VREF

GND

VEE

Figure 1 - Functional Block Diagram

VBAT

DCRI

SHK

CP1

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