Datasheet > MH88628

MH88628

更新时间： 2024-11-21 12:46:43

品牌	Logo	应用领域
MITEL		电池电信集成电路
页数	文件大小	规格书
16页	158K
描述
Central Office SLIC Preliminary Information

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MH88628 数据手册

MH88628

Central Office SLIC

Preliminary Information

ISSUE 5

April 1995

Features

Ordering Information

40 Pin SIL Package

•

Programmable gain, network balance and

impedance

MH88628

•

Transformerless 2-4 wire conversion

0°C to 70°C

Constant current with constant voltage fallback

for long loop capability

•

Pin compatible with MH88632, MH88620 and

MH88628

Applications

Unbalanced detection (Tip, Ring ground

sensing)

•

On/Off Premise PBX Line Cards

DID (Direct Inward Dial) Line Cards

Central Office Line Cards

•

Auto ring trip with zero crossing

On-Hook transmission (ANI) capability

Compatible with requirements of CCITT,

DOC/FCC and CSA/UL

Description

•

Excellent power dissipation (SIL vertical

mounting)

The Mitel MH88628 SLIC provides all of the

functions required to interface 2-wire off premise

subscriber loops to a serial TDM, PCM, switching

network of a modern PBX. The MH88628 is

manufactured using thick-film hybrid technology

which offers high voltage capability, reliability and

high density resulting in significant printed circuit

board area savings. A complete C.O. line card can

be implemented with very few external components.

•

12/16kHz meter pulse injection control

Solid State TIP/RING reversals

Ringing amplifier

VBat LGND

LCA

VDD

VEE

AGND

Switch-hook

Threshold Set

Loop

RING

RF1

RF2

TIP

TF1

TF2

Current

Set

Driver

Matched

Ring

Filter

Circuitry

and

Feed

Switch-hook

Detect

Resistors

SHK

Speech

Circuit

2-4 Wire

Unbalanced

Detection

Conversion

NATT

Impedance

Network

VRLY

RNGD

External

Signal

Input

Decoder

Circuit

Ringing

Amplifier

Gain Adjust

SEL1 SEL2 ACRI DCRI ESI ESE Z900 Z600 Z1 Z2

GRX1 GRX0 RX GTX1 GTX0 TX

Figure 1 - Functional Block Diagram

2-199

12 3 4 5 6 7...16

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与MH88628相关器件

型号	品牌	获取价格	描述	数据表
MH88630	MITEL	获取价格	Central Office Interface (LS/GS) Preliminary Information
MH88630-1	ZARLINK	获取价格	Telecom IC, Hybrid,
MH88630-2	ZARLINK	获取价格	Telecom IC, Hybrid,
MH88631	MITEL	获取价格	Central Office Interface (LS/GS) Preliminary Information
MH88631-1	MITEL	获取价格	Central Office Interface (LS/GS) Preliminary Information
MH88631-2	MITEL	获取价格	Central Office Interface (LS/GS) Preliminary Information
MH88632	MITEL	获取价格	Central Office Interface Circuit Preliminary Information
MH88632B	MITEL	获取价格	Central Office Interface Circuit Preliminary Information
MH88632B1	MICROSEMI	获取价格	TELECOM-SLIC, SIP40, LEAD FREE, SIP-48
MH88632BT	MITEL	获取价格	Central Office Interface Circuit Preliminary Information