Datasheet > L9215A

L9215A

更新时间： 2024-01-26 01:59:13

品牌	Logo	应用领域
杰尔 - AGERE		/
页数	文件大小	规格书
50页	1068K
描述
Short-Loop Sine Wave Ringing SLIC

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

L9215A 数据手册

Data Sheet

September 2001

L9215A/G

Short-Loop Sine Wave Ringing SLIC

Applications

Introduction

■ Voice over Internet Protocol (VoIP)

The Agere Systems Inc. L9215 is a subscriber line

interface circuit that is optimized for short-loop,

power-sensitive applications. This device provides

the complete set of line interface functionality (includ-

ing power ringing) needed to interface to a subscriber

loop. This device has the capability to operate with a

V^CCsupply of 3.3 V or 5 V and is designed to mini-

mize external components required at all device

interfaces.

■ Cable Modems

■ Terminal Adapters (TA)

■ Wireless Local Loop (WLL)

■ Telcordia Technologies™ GR-909 Access

■ Network Termination (NT)

■ Key Systems

Features

Description

■ Onboard ringing generation

This device is optimized to provide battery feed, ring-

ing, and supervision on short-loop plain old tele-

phone service (POTS) loops.

■ Three ringing input options:

— Sine wave

— PWM

— Logic level square wave

This device provides power ring to the subscriber

loop through amplification of a low-voltage input. It

provides forward and reverse battery feed states, on-

hook transmission, a low-power scan state, meter

pulse states, and a forward disconnect state.

■ Flexible VCC options:

— 5 V or 3.3 V V^CC

— No –5 V required

■ Battery switch to minimize off-hook power

The device requires a V^CCand battery to operate.

V^CCmay be either a 5 V or a 3.3 V supply. The ring-

ing signal is derived from the high-voltage battery. A

battery switch is included to allow for use of a lower-

voltage battery in the off-hook mode, thus minimizing

short-loop off-hook power.

■ 11 operating states:

— Scan mode for minimal power dissipation

— Forward and reverse battery active

— On-hook transmission states

— Meter pulse states

— Ring mode

— Disconnect mode

Loop closure, ring trip, and ground key detectors are

available. The loop closure detector has a fixed

threshold with hysteresis. The ring trip detector

requires a single-pole filter, thus minimizing external

components required.

■ Ultralow on-hook power:

— 27 mW scan mode

— 42 mW active mode

■ Two SLIC gain options to minimal external compo-

This device supports meter pulse applications. Meter

pulse is injected into a dedicated meter pulse input.

Injection of meter pulse onto tip and ring is controlled

by the device’s logic input pin.

nents in codec interface

■ Loop start, ring trip, and ground key detectors

■ Software- or hardware-controllable current-limit

and overhead voltage

Both the dc current limit and overhead voltage are

programmable. Programming may be done by exter-

nal resistors or an applied voltage source. If the volt-

age source is programmable, the current limit and

overhead may be set via software control.

■ Meter pulse compatible

■ 32-pin PLCC package

■ 48-pin MLCC package

The device is offered with two gain options. This

allows for an optimized codec interface, with minimal

external components regardless of whether a first-

generation or a programmable third-generation

codec is used.

12 3 4 5 6 7...50

中文翻译

下载PDF

与L9215A相关器件

型号	品牌	获取价格	描述	数据表
L9216A	AGERE	获取价格	Short-Loop Ringing SLIC with Ground Start
L9217A	AGERE	获取价格	Low-Cost Line Interface with Reverse Battery and PPM
L9218A	AGERE	获取价格	Low-Cost Line Interface
L9219A	AGERE	获取价格	Low-Cost Line Interface with Reverse Battery and Dual Current Limit
L9222	STMICROELECTRONICS	获取价格	QUAD INVERTING TRANSISTOR SWITCH
L9222_04	STMICROELECTRONICS	获取价格	QUAD INVERTING TRANSISTOR SWITCH
L9222D	STMICROELECTRONICS	获取价格	1.2A 4 CHANNEL, AND GATE BASED PRPHL DRVR, PDSO20, SO-20
L9222-D	STMICROELECTRONICS	获取价格	QUAD INVERTING TRANSISTOR SWITCH
L9222D013TR	STMICROELECTRONICS	获取价格	L9222D013TR
L9230	STMICROELECTRONICS	获取价格	SPI CONTROLLED H-BRIDGE

与L9215A相关文章

LTM4644/LTM4644-1：创新的四输出同步降压微模块调节器
2024-07-02

2
2N3500：一款多用途NPN硅晶体管的全面解析
2024-07-02

3
最详细资料解析：BA5917AFP参数说明、引脚说明
2024-07-02

5
MAX232IDR数据手册：产品特性、电气参数、替代型号推荐
2024-07-02

3

产品中心

服务支持

精选活动

关于我们

帮助中心

L9215A

L9215A 数据手册

与L9215A相关器件

与L9215A相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

L9215A

L9215A 数据手册

与L9215A相关器件

与L9215A相关文章

您还可以找

您在本页遇到什么问题？