ISL5585 Datasheet

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庐

ISL5585

Data Sheet

October 2003

FN6026.4

3.3V Ringing SLIC Family for Voice Over

Broadband (VOB)

The 3.3V family of ringing subscriber line interface circuits

(SLIC) supports analog Plain Old Telephone Service

(POTS) in short and medium loop length, wireless and

wireline voice over broadband applications. Ideally suited for

customer premise equipment, this family of products offers

flexibility to designers with high ringing voltage and low

power consumption system requirements.

The ISL5585 family is capable of operating with 100V ringing

battery supply, which translates directly to the amount of

ringing voltage supplied to the subscriber. With the high

operating voltage, subscriber loop lengths can be extended

to 500鈩?(i.e., 5,000 feet) and beyond, allowing this family to

serve emerging Fiber In The Loop (FITL) markets.

Other key features across the product family include: 3.3V

V

CC

operation, low power consumption, ringing using

sinusoidal or trapezoidal waveforms, robust auto-detection

mechanisms for when subscribers go on or off hook, and

minimal external discrete application components.

Integrated test access features are also offered on selected

products to support loopback testing as well as line

measurement tests.

There are ten product offerings of the ISL5585 providing

various grades of ringing battery voltage and longitudinal

balance.

Features

鈥?3.3V Operation

鈥?Onboard Ringing Generation

鈥?Low Standby Power Consumption (75V, 65mW)

鈥?Programmable Transient Current Limit

鈥?Improved Off Hook Software Interface

鈥?Integrated MTU DC Characteristics

鈥?Low External Component Count

鈥?Silent Polarity Reversal

鈥?Pulse Metering and On Hook Transmission

鈥?Tip Open Ground Start Operation

鈥?Balanced and Unbalanced Ringing

鈥?Thermal Shutdown with Alarm Indicator

鈥?28 Lead Surface Mount Packaging

鈥?Reduced Footprint Quad Flatpack No-lead (QFN)

Packaging

Applications

鈥?Short Loop Access Platforms

鈥?Voice Over Internet Protocol (VoIP)

鈥?Voice Over Cable and DSL Modems

鈥?Internet Protocol PBX

Block Diagram

POL

ILIM

CDC

VBL

VBH

鈥?FiberTo The Home (FTTH)

鈥?Remote Subscriber Units

DC

CONTROL

BATTERY

SWITCH

RINGING

PORT

VRS

鈥?Ethernet Terminal Adapters

Related Literature

TIP

RING

TL

2-WIRE

PORT

TRANSIENT

CURRENT

LIMIT

TRANSMIT

SENSING

4-WIRE

PORT

鈥?AN1038, User鈥檚 Guide for Development Board

AUX

VTX

-IN

VFB

鈥?AN9824, Modeling of the AC Loop

鈥?TB379 Thermal Characterization of Packages for ICs

鈥?AN9922, Thermal Characterization and Modeling of the

RSLIC18 in the Micro Leadframe Package

SW+

SW-

TEST

ACCESS

DETECTOR

LOGIC

CONTROL

LOGIC

F2

F1

F0

RT SH E0 DET ALM

BSEL SWC

1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

|

Intersil (and design) is a registered trademark of Intersil Americas Inc.

Copyright 漏 Intersil Americas Inc. 2003. All Rights Reserved.

All other trademarks mentioned are the property of their respective owners.

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