LE77D112BTCT datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > semiconductor> Analog mixed-signal IC> LE77D112BTCT

LE77D112BTCT: DescriptionIC codec 2ch voslic 46db 44tqfp; Categorysemiconductor Analog mixed-signal IC; File Size362KB，23 Pages; ManufacturerMicrosemi; Websitehttps://www.microsemi.com; Environmental Compliance

Download Datasheet Parametric Compare View All

LE77D112BTCT Online Shopping

Suppliers	Part Number	Price	MOQ	In stock
	LE77D112BTCT	-	-	View	Buy Now

LE77D112BTCT Overview

IC codec 2ch voslic 46db 44tqfp

LE77D112BTCT Parametric

Parameter Name	Attribute value
Datasheets
Le77D11
Standard Package	1,500
Category	Integrated Circuits (ICs)
Family	Interface - Telecom

Preview

Download Datasheet

View All

™

Le77D11

Voice Over Subscriber Line Interface Circuit

VE770 Series

APPLICATIONS

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

ORDERING INFORMATION

An Le78D11 VoSLAC™ device must be used with this part.

Device

Le77D112TC

Le77D112BTC

44-pin eTQFP

44-pin eTQFP (Green package)*

Package

*Green package meets RoHS Directive 2002/95/EC of the European

Council to minimize the environmental impact of electrical equipment.

DESCRIPTION

The

Zarlink

Le77D11 dual-channel Voice over Subscriber

Line Interface Circuit (VoSLIC™) device has enhanced and

optimized features to directly address the requirements of

voice over broadband applications. Their common 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 Le78D11/Le77D11 is a

two-device chip set providing a totally software 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. The Le77D11 Dual VoSLIC

device requires only two power supplies: +3.3 VDC and

nominally +12 VDC, but can range from +8 to +40 VDC

depending on the application. A single TTL-level clock source

drives the two switching regulators that generate the required

line voltage dynamically on a “per line” basis. Six

programmable states are available: Low Power Standby,

Disconnect, Normal Active, Reverse Polarity, Ringing and Line

Test. Binary fault detection is provided upon application of fault

conditions or thermal overload.

FEATURES

Integrated Dual-Channel Chip set

— Built-in boost switching power supply tracks line voltage

minimizing power dissipation

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

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

— Minimum external discrete components

— 44-pin eTQFP package

Ringing

— 5REN

— Up to 90 Vpk, Balanced

— Sinusoidal or trapezoidal with programmable DC offset

Subscriber Loop Test/Self-Test

— GR-909 compliant drop test capability in both

measurements and pass/fail

– Hazardous Potential

– Foreign Electromotive Force

– Resistive Faults

– Receive Off-hook

– Ringers Test

– Loop Length

World Wide Programmability:

— Two-wire AC impedance

— Dual Current Limit

— Metering

— Programmable loop closure and ring trip thresholds

Six SLIC Device States, including:

— Low power Standby state

— On-hook transmission

— Reverse Polarity

BLOCK DIAGRAM

Le77D11 SLIC

Switching Power

Supply

2-wire

Tip+Ring

Interface

Ring

Tip

2-wire to 4-wire

conversion

Le78D11

Codec

Interface

2-wire to 4-wire

conversion

2-wire

Tip+Ring

Interface

Switching Power

Supply

RELATED LITERATURE

080697 Le78D11 Data Sheet

080716 Le77D11/Le78D11 Chip Set User’s Guide

081013 Layout Considerations for the Le77D11 and

Le9502 Application Note

Ring

Tip

Document ID#

080696

Date:

Rev:

Version:

Distribution:

Public Document

Sep 19, 2007

Le77D11

TABLE OF CONTENTS

Data Sheet

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Related Literature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Block Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Two-Wire Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Switcher Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Signal Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Fault Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Signal Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Control Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Supply Currents and Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

System Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Device Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Test Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Single Channel Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Application Circuit Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Physical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

44-Pin eTQFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Revision B1 to C1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Revision C1 to D1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Revision D1 to E1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Revision E1 to F1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Revision F1 to G1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Revision G1 to G2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Zarlink Semiconductor Inc.

LE77D112BTCT Related Products

	LE77D112BTCT	LE77D112BTC
Description	IC codec 2ch voslic 46db 44tqfp	IC codec 2ch voslic 46db 44tqfp

Recommended Resources

Solar power panel circuit diagram

FKL-32 type thyristor automatic excitation device circuit b

Ordinary transistor triggered unidirectional thyristor dimming light circuit

Simple phase sequence detection circuit diagram

555 motor vehicle direction light electronic scintillator circuit

Three-button interlock electronic switch

【ST Theme Month】Unboxing and Powering on: Today I received the forum's 10th anniversary event --- STM32L011 development board. The express delivery showed that it had arrived on the 12th, but I never got it. Finally, it was at the doorman's p...; suoma stm32/stm8

Using extended memory in keil: I have a question: How to use extended memory in Keil, such as 89c51+2764 (8k*8 rom) in two cases: 1. The program is larger than 4k, such as 6k, so after I generate the hex file (continuous), how can ...; xinji5042842 51mcu

Cyclone V GX Trial Report--High Frequency Ultrasonic Data Acquisition System: Cyclone V GX Trial Report - High-frequency Ultrasonic Data Acquisition System First of all, I would like to thank EEworld and Altera for jointly providing such a good event, which gave me the opportun...; hjf2002 FPGA/CPLD

Problems with component screening and classification: When conducting a secondary screening of electronic components, I saw a document that divided integrated circuits into two categories: hermetic and non-hermetic. However, after checking the national m...; shaorc Discrete Device

I would like to ask you a question about paging or segmenting a specified function, thank you!: I am a beginner in WDM and found that many examples require specifying the paging or segmentation of functions, as shown below: #pragma alloc_text(INIT, DriverEntry) #pragma alloc_text(PAGE, Example_U...; lizhonglei201 Embedded System

The origin and overview of C language: The C language was first introduced in the early 1970s. In 1978, ATT Bell Labs officially released the C language.BWKernighan and DMRitchit co-authored the famous book "THE C PROGRAMMING LANGUAGE". Us...; phoenixxz Programming Basics

Shortcut: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ

Popular Components