HC55185DIM Intersil Corporation, HC55185DIM Datasheet

HC55185DIM

Manufacturer Part Number

HC55185DIM

Description

Manufacturer

Intersil Corporation

Datasheets

1.HC55185AIMZ.pdf (20 pages)

2.HC55185DIM.pdf (17 pages)

Specifications of HC55185DIM

Case

PLCC-28

Date_code

2004+

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VoIP Ringing SLIC Family

short and medium loop length, wireless and wireline

applications. Ideally suited for remote subscriber units, this

family of products offers flexibility to designers with high

ringing voltage and low power consumption system

requirements.

The RSLIC-VoIP family operates to 100V which translates

directly to the amount of ringing voltage supplied to the end

subscriber. With the high operating voltage, subscriber loop

lengths can be extended to 500Ω (i.e., 5,000 feet) and

beyond.

Other key features across the product family include: 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 five product offerings of the HC55185 with each

version providing voltage grades of high battery voltage and

longitudinal balance. The voltage feed amplifier design uses

low fixed loop gains to achieve high analog performance

with low susceptibility to system induced noise.

Block Diagram

RING

SW+

ILIM

SW-

TIP

POL

TRANSIENT

CONTROL

CURRENT

ACCESS

2-WIRE

PORT

LIMIT

TEST

CDC

RTD

RD E0

DETECTOR

VBL

TRANSMIT

SENSING

BATTERY

LOGIC

SWITCH

The RSLIC-VoIP family of

ringing subscriber line

interface circuits (RSLIC)

supports analog Plain Old

Telephone Service (POTS) in

VBH

DETALM

Data Sheet

BSEL SWC

CONTROL

RINGING

4-WIRE

LOGIC

PORT

1-888-INTERSIL or 888-468-3774

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

VRS

VRX

VTX

-IN

VFB

Features

• Onboard Ringing Generation

• Compatible with Existing HC5518x Devices

• Low Standby Power Consumption (75V, 65mW)

• Reduced Idle Channel Noise

• Programmable Transient Current Limit

• Improved Off Hook Software Interface

• Integrated MTU DC Characteristics

• Low External Component Count

• Silent Polarity Reversal

• Pulse Metering and On Hook Transmission

• Tip Open Ground Start Operation

• Balanced and Unbalanced Ringing

• Thermal Shutdown with Alarm Indicator

• 28 Lead Surface Mount Packaging

• Reduced Footprint Micro Leadframe Packaging

• Dielectric Isolated (DI) High Voltage Design

• QFN Package Option

• Pb-free plus anneal available (RoHS compliant)

Applications

• Voice Over Internet Protocol (VoIP)

• Cable Modems

• Voice Over DSL (VoDSL)

• Short Loop Access Platforms

• Remote Subscriber Units

• Terminal Adapters

Related Literature

• AN9814, User’s Guide for Development Board

• AN9824, Modeling of the AC Loop

• Interfacing to DSP CODECs (Contact Factory)

• TB379 Thermal Characterization of Packages for ICs

• AN9922, Thermal Characterization and Modeling of the

December 18, 2006

- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat

- Near Chip Scale Package Footprint; Improves PCB

RSLIC18 in the Micro Leadframe Package

No Leads - Product Outline

efficiency and has a thinner profile

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

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

HC55185

FN4831.14

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