MT91610AQ Datasheet

IC型號：
MT91610AQ
PDF描述：
Programmable Ringing SLIC
文件大?。?/label>
255.47KB
PDF頁數(shù)：
20頁
芯片廠家：
ZARLINK

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MT91610

Programmable 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 6

July 2001

Package Information

MT91610AQ

36 Pin QSOP Package

-40擄C to +85擄C

Description

The Zarlink 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 loops, 2W to 4W

conversion, off-hook and dial pulse detection, direct

balance ringing with built in ring tripping, unbalance

detection, user definable 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

RV RC

GTX1 ESE

ESI

GTX0

Tip Drive

Controller

Ringing

Controller

Audio Gain & Network

Balance Circuit

TIP

RING

Line Sense

2 W to 4 W

Conversion & Line

Impedance

CP5

Line

Reverse

Driver

Over-Current

Protection Circuit

Ring Drive

Controller

Loop Supervision

VDD

VREF

DCRI

GND

VEE

CP2

CP3

Figure 1 - Functional Block Diagram

SHK

CP4 CP6 CP7

VBAT

CP1

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