MAX3272 Просмотр технического описания (PDF) - Maxim Integrated

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MAX3272

+3.3V, 2.5Gbps Low-Power Limiting Amplifiers

Maxim Integrated 

19-2269; Rev 3; 11/04

EVAALVUAAILTAIOBNLEKIT

+3.3V, 2.5Gbps Low-Power

Limiting Amplifiers

General Description

The MAX3272/MAX3272A 2.5Gbps limiting amplifiers

accept a wide range of input voltages and provide a

constant-level output voltage with controlled edge

speeds. Additional features include power detectors

with programmable loss-of-signal (LOS) indication, an

optional squelch function that mutes the data output sig-

nal when the input voltage falls below a programmable

threshold, and an output polarity selector. These parts

exhibit excellent jitter performance and have low power

dissipation.

The MAX3272/MAX3272A feature current-mode logic

(CML) data outputs that are tolerant of inductive con-

nectors, and are available in a 4mm ✕ 4mm QFN pack-

age or in die form (MAX3272 only). Along with the

MAX3271, the MAX3272/MAX3272A are ideal for low-

power, compact optical receivers.

Applications

Gigabit Ethernet Optical Receivers

Fibre Channel Optical Receivers

System Interconnects

2.5Gbps Optical Receivers

SONET/SDH Receivers

Features

♦ Single +3.3V Power Supply

♦ 33mA Supply Current

♦ 5ps Deterministic Jitter

♦ 90ps Edge Speed

♦ Output Squelch Function

♦ Programmable Loss-of-Signal Function

♦ CML Output Interface

♦ 20-Pin 4mm ✕ 4mm QFN or Thin QFN Package

♦ Selectable Output Polarity

Ordering Information

PART

TEMP RANGE PIN-

PACKAGE

PACKAGE CODE

MAX3272EGP -40°C to +85°C 20 QFN

G2044-3

MAX3272E/D -40°C to +85°C Dice*

—

MAX3272AETP+ -40°C to +85°C 20 Thin QFN T2044-3

MAX3272AEGP -40°C to +85°C 20 QFN

G2044-3

+ Denotes Lead-Free Package.

*Dice are designed and guaranteed to operate from -40°C to

+85°C, but are tested only at TA = +25°C.

Pin Configuration appears at end of data sheet.

Typical Operating Circuit

CAZ

+3.3V

+3.3V

CAZ1 CAZ2 VCC

OUTPOL

MAX3272/

MAX3272A

MAX3271

IN+

0.1µF

0.1µF

100Ω

IN-

CCLOS

CLOS

TH SQUELCH

RTH

Typical Operating Circuits continue at end of data sheet.

OUT+

OUT-

GND LOS LOS LEVEL

LOSS

OF

SIGNAL

+3.3V

VCC

SDI+

SDO+

SDO-

MAX3873

CDR SCLKO+

SDI-

SCLKO-

GND

________________________________________________________________ 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.

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