MAX3675 Просмотр технического описания (PDF) - Maxim Integrated

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MAX3675

622Mbps, Low-Power, 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier

Maxim Integrated 

19-1258; Rev 4; 4/05

EVALUAATVIOANILKAIBTLMEANUAL

622Mbps, Low-Power, 3.3V Clock-Recovery

and Data-Retiming IC with Limiting Amplifier

General Description

The MAX3675 is a complete clock-recovery and data-

retiming IC incorporating a limiting amplifier. It is intend-

ed for 622Mbps SDH/SONET applications and operates

from a single +3.3V supply.

The MAX3675 has two differential input amplifiers: one

accepts PECL levels, while the other accepts small-sig-

nal analog levels. The analog inputs access the limiting

amplifier stage, which provides both a received-signal-

strength indicator (RSSI) and a programmable-threshold

loss-of-power (LOP) monitor. Selecting the PECL amplifier

disables the limiting amplifier, conserving power. A loss-

of-lock (LOL) monitor is also incorporated as part of the

fully integrated PLL.

Applications

SDH/SONET Transmission Systems

SDH/SONET Access Nodes

Add/Drop Multiplexers

ATM Switches

Digital Cross-Connects

Pin Configuration appears at end of data sheet.

Features

o Single +3.3V or +5.0V Power Supply

o Complies with ANSI, ITU, and Bellcore

SDH/SONET Specifications

o Low Power: 215mW at +3.3V

o Selectable Data Inputs, Differential PECL or

Analog

o Received-Signal-Strength Indicator (RSSI)

o Loss-of-Power and Loss-of-Lock Monitors

o Differential PECL Clock and Data Outputs

o No External Reference Clock Required

Ordering Information

PART

TEMP RANGE PIN-PACKAGE PKG

CODE

MAX3675ECJ -40°C to +85°C 32 TQFP

C32-1

MAX3675EHJ -40°C to +85°C 5mm 32 TQFP H32-1

MAX3675E/D -40°C to +85°C Dice*

DICE

*Contact factory for availability. Dice are designed to operate

from -40°C to +85°C, but are tested and guaranteed only at

Tj = +45°C.

Typical Operating Circuit

100pF

PHOTO-

DIODE

+3.3V

+3.3V

CLOL

0.01µF

52.3Ω

1% 2.2µF

0.01µF

VCC

FILT

MAX3664

INREF

OUT+

IN

OUT-

ZO = 50Ω

100Ω

ZO = 50Ω

GND COMP

220pF

+3.3V

0.1µF

INSEL LOL PHADJ+ PHADJ- FIL+

DDI+

DDI-

CIN

0.01µF

ADI+

MAX3675

FIL-

SDO+

SDO-

ADI-

CIN

0.01µF

VCC

SCLKO+

SCLKO-

CFILT OLC+ OLC- GND RSSI INV

VTH LOP

CF

47nF

COLC

33nF

R2

R1

100k

+3.3V

130Ω

ZO = 50Ω

ZO = 50Ω

82Ω

130Ω

82Ω

+3.3V

130Ω

ZO = 50Ω

ZO = 50Ω

82Ω

130Ω

82Ω

________________________________________________________________ Maxim Integrated Products 1

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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