Datasheet > LE9502TC

LE9502TC

更新时间： 2024-01-16 02:47:53

品牌	Logo	应用领域
加拿大卓联 - ZARLINK		电信电信集成电路
页数	文件大小	规格书
25页	432K
描述
SLIC, Bipolar, PQFP44, TQFP-44

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LE9502TC 技术参数

生命周期：	Transferred	包装说明：	HTQFP,
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.74	JESD-30 代码：	S-PQFP-G44
JESD-609代码：	e3	长度：	10 mm
湿度敏感等级：	3	功能数量：	1
端子数量：	44	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	HTQFP	封装形状：	SQUARE
封装形式：	FLATPACK, HEAT SINK/SLUG, THIN PROFILE	峰值回流温度（摄氏度）：	265
认证状态：	Not Qualified	座面最大高度：	1.2 mm
标称供电电压：	3.3 V	表面贴装：	YES
技术：	BIPOLAR	电信集成电路类型：	SLIC
温度等级：	INDUSTRIAL	端子面层：	MATTE TIN
端子形式：	GULL WING	端子节距：	0.8 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	10 mm	Base Number Matches：	1

LE9502TC 数据手册

™

Le9502

Ringing Subscriber Line Interface Circuit

VE950 Series

APPLICATIONS

DESCRIPTION

! Short/Medium Loop: approximately 2000 ft. of 26 AWG,

and 5 REN loads

! Voice over IP/DSL – Integrated Access Devices, Smart

Residential Gateways, Home Gateway/Router

! Cable Telephony – NIU, Set-Top Box, Home Side Box,

Cable Modem, Cable PC

! Fiber–Fiber In The Loop (FITL), Fiber to the Home

(FTTH)

! Wireless Local Loop, Intelligent PBX, ISDN NT1/TA

Legerity’s Le9502 Ringing Subscriber Line Interface Circuit

(RSLIC) device from the VE950 series has enhanced and

optimized features to directly address the requirements of

Voice over Broadband applications. Its goal is to reduce system

level costs, space, and power through higher levels of

integration, and to reduce the total cost of ownership by offering

better quality of service. The Le9502 RSLIC device provides a

totally configurable solution to the BORSCHT functions for two

lines. The resulting system is less complex, smaller, and

denser, yet cost effective with minimal external components.

FEATURES

! Integrated Dual-Channel Chip set

— Built-in boost switching power supply tracks line voltage

minimizing power dissipation

The Le9502 RSLIC device requires only two power supplies:

+3.3 VDC and nominally +12 VDC. The latter power supply can

range from +8 VDC to +40 VDC, depending on the application.

A single TTL-level clock source drives an external transistor

which controls the ramp voltage that in turn feeds the switching

regulators. Five programmable states are available: Active,

Reverse Polarity, Ringing, Standby, and Disconnect. The DC

feed, two-wire AC input impedance, hook-switch threshold, and

ring trip threshold are programmable via external discrete

components. Binary fault detection is provided upon

application of fault conditions or thermal overload.

— Only +3.3 V and +12 V (nominal) required

— Wide range of input voltages (+8 V to +40 V) supported

— Minimal external discrete components

— 44-pin eTQFP package

! Ringing

— 70 Vpk into 5REN

— 90 Vpk capable

— Sinusoidal or trapezoidal capability

— DC offset support

— Common differential interface for both channels

! World Wide programmability:

— Two-wire AC impedance

— Dual Current Limit

— Loop closure and ring trip thresholds

BLOCK DIAGRAM

! Five SLIC States, including:

— Low power Standby state

— Reverse Polarity

Le9502

Switching Power

Supply

RELATED LITERATURE

Ring

Tip

2-wire

Tip+Ring

Interface

! 081189 Le9500 RSLIC Device Data Sheet

! 081208 Le9501 RSLIC Device Data Sheet

! 080696 Le77D11 VoSLIC™ Device Data Sheet

! 080697 Le78D11 VoSLAC™ Device Sheet

! 080716 Le77D11 /Le78D11 Chip Set User’s Guide

! 080780 Layout Considerations for the Le77D11 and

Le9502 Devices Application Note

2-wire to 4-wire

conversion

Differential

Codec

Device

Interface

2-wire to 4-wire

conversion

2-wire

Tip+Ring

Interface

Ring

Tip

ORDERING INFORMATION

Switching Power

Supply

Device

Package

44-pin eTQFP

Le9502TC

Document ID# 081007 Date:

Apr 21, 2004

Rev:

Version:

Distribution:

Public Document

12 3 4 5 6 7...25

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