le87220 Zarlink Semiconductor, le87220 Datasheet

le87220

Manufacturer Part Number

le87220

Description

Worldwide Xdsl Dual Channel Line Driver

Manufacturer

Zarlink Semiconductor

Datasheet

1.LE87220.pdf (14 pages)

Available stocks

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Part Number

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Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

le87220J

Manufacturer:

Quantity:

160

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

le87220KQC

Manufacturer:

ZARLINK

Quantity:

5 050

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

le87220KQCT

Manufacturer:

ZARLINK

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5 050

Company:

Meier Automation Equipment Co., Limited

Part Number:

le87220QCJ

Manufacturer:

LEGERITY

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20 000

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APPLICATIONS

FEATURES

RELATED LITERATURE

ORDERING INFORMATION

NOTE: On August 3, 2007, Zarlink Semiconductor acquired the products and

technology of Legerity Holdings.

Le87220JQC

Le87220KQC

Asymmetrical Digital Subscriber Loop (ADSL, ADSL+,

ADSL2, ADSL2+) Line Drivers

G.lite Line Drivers

HDSL, HDSL2, HDSL4, SHDSL Line Drivers

DSLAM, CO, DLC, BLC, MDU/MTU Line Drivers

Two-channel differential line drivers

Low power

— 720 mW per channel, typical (ADSL+ Mode)

— 670 mW per channel, typical (ADSL Mode)

Operates directly from a typical telecom power supply

without a DC-to-DC converter and a 3.3 V supply

Integrated lightning and surge protection

50 V

MTPR of 70 dB, typical

Minimum external component count ~ 10 discretes per

channel

Can output 20.8 dBm power into 100-Ω load with step

down transformer

Thermal shutdown

Small footprint

— 24-pin (6 x 6 mm) QFN

080791 Quad Flat No-Lead (QFN) Package

Application Note

OUT

The green package meets RoHS Directive 2002/95/EC of the

European Council to minimize the environmental impact of

electrical equipment.

For delivery using a tape and reel packing system, add a "T" suffix

to the OPN (Ordering Part Number) when placing an order.

Device

(showtime, >5 kft 26 AWG cable, not including load)

max 95 mA into 100-Ω load

differential signal at the driver outputs

Voice Solution

24-pin QFN, 6 x 6 mm

(Green Package)

Package

Tray

Packing

Worldwide xDSL Dual Channel Line Driver

DESCRIPTION

The Le87220 device, from the Legerity Battery Direct™ family

BD870 series devices, integrates two fully differential line

drivers, optimized feed back components, on-chip surge

protection diodes and bias control stages into a small

6 x 6 mm

needed to implement ADSL2+ downstream transmitters for two

lines. The Le87220 device is built on Legerity’s high-voltage

process that allows for direct operation from a standard

telecom, negative battery supply (and a 3.3-V supply). In

contrast, typical line cards today supply the power to the line

drivers locally, via DC-to-DC converter modules. The

elimination of these additional modules translates into cost and

power savings at the system level. Operation from a

centralized source of power makes the Le87220 device a

unique, less costly, more efficient solution for xDSL line driver

applications. The Le87220 device is one of the most cost-

effective and easy-to-use parts for today’s xDSL applications.

BLOCK DIAGRAM

DDWNP1

DDWNN1

DDWNP2

DDWNN2

AGND

VCC

QFN package. It contains all the active components

CONTROL

LOGIC1

Document ID# 081111

Rev:

Distribution:

–

Public Document

–

BIAS

Le87220

BD870 Series

CONTROL

Date:

Version: 2

LOGIC2

Sep 20, 2007

BGND

VBAT

AY1

BY1

AY2

BY2

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