MAX3273E/D Просмотр технического описания (PDF) - Maxim Integrated

Номер в каталоге

Компоненты Описание

производитель

MAX3273E/D

+3.3V, 2.5Gbps Low-Power Laser Driver

Maxim Integrated 

19-2081; Rev 3; 2/07

+3.3V, 2.5Gbps Low-Power Laser Driver

General Description

The MAX3273 is a compact, low-power laser driver for

applications up to 2.7Gbps. The device uses a single

+3.3V supply and typically consumes 30mA. The bias

and modulation current levels are programmed by

external resistors. An automatic power-control (APC)

loop is incorporated to maintain a constant average

optical power over temperature and lifetime. The laser

driver is fabricated using Maxim’s in-house, second-

generation SiGe process.

The MAX3273 accepts differential CML-compatible

clock and data input signals. Inputs are self-biased to

allow AC-coupling. An input data-retiming latch can be

enabled to reject input jitter if a clock signal is available.

The driver can provide bias current up to 100mA and

modulation current up to 60mAP-P with typical (20% to

80%) edge speeds of 59ps. A failure-monitor output is

provided to indicate when the APC loop is unable to

maintain average optical power. The MAX3273 is avail-

able in 4mm ✕ 4mm, 24-pin QFN and thin QFN pack-

ages, as well as in die form.

Applications

SONET OC-48 and SDH STM-16

Transmission Systems

Add/Drop Multiplexers

Digital Cross-Connects

2.5Gbps Optical Transmitters

Pin Configurations appear at end of data sheet.

Features

♦ 30mA Power-Supply Current

♦ Single +3.3V Power Supply

♦ Up to 2.7Gbps (NRZ) Operation

♦ Automatic Average Power Control with Failure

Monitor

♦ Programmable Modulation Current from 5mA to

60mA

♦ Programmable Bias Current from 1mA to 100mA

♦ Typical Fall Time of 59ps

♦ Selectable Data Retiming Latch

♦ Complies with ANSI, ITU, and Bellcore

SDH/SONET Specifications

Ordering Information

PART

TEMP RANGE PIN-

PACKAGE

PACKAGE

CODE

MAX3273EGG -40°C to +85°C 24 QFN

G2444-1

(4mm
4mm)

MAX3273ETG+ -40°C to +85°C 24 Thin QFN T2444-2

(4mm
4mm)

MAX3273E/D -40°C to +85°C Dice*

—

*Dice are designed to operate from TA = -40°C to +85°C, but

are tested and guaranteed at TA = +25°C only.

+Denotes lead-free package.

Typical Application Circuit

DATA +

DATA -

2.5Gbps

SERIALIZER

WITH CLOCK

GENERATION

CLK+

CLK-

50Ω

100Ω

50Ω

50Ω

100Ω

50Ω

VCC

DATA +

DATA -

CLK+

0.01μF

VCC

LP1

25Ω

OUT-

MAX3273

OUT+

25Ω

BIAS

LP1

LP2

20Ω

0.056μF

CLK-

MD

500pF

REPRESENTS A CONTROLLED-IMPEDANCE TRANSMISSION LINE.

†.

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Share Link: