General Description

The MAX3803 equalizer automatically provides com-

pensation for transmission-medium losses encountered

with FR4 stripline and cable in an incredibly small 2mm

× 2.5mm package. It is ideal for backplane applications

requiring up to 40in between the line card and the

switch card or up to 10m of twin ax cable between

racks. Its small size provides placement and routing

flexibility. The CML inputs and outputs are DC-coupled

and can be terminated to a supply as low as +1.1V.

The MAX3803 operates from 0°C to +85°C and con-

sumes 160mW at +3.3V.

Applications

Backplane Interconnect

Rack-to-Rack Interconnect

Common-Mode Voltage Translation

(LVDS, PECL, or CML)

Features

o DC-Coupled Input and Output to Terminations

as Low as +1.1V

o 1Gbps to 3.2Gbps Operating Range

o Spans 40in (1m) of FR4

o Spans 10m, 28AWG Twin Ax

o Receive Equalization to Reduce ISI

DC-Coupled, UCSP 3.125Gbps Equalizer

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

MAC

WITH

SERDES

Rx

Tx

Tx

Rx

+1.1V

+3.3V

+1.1V

SWITCH

ASIC

WITH

SERDES

Rx

Tx

+1.1V

+1.1V

22

22

IN

+3.3V

OUT

OUT

IN

22

22

≤40in (1m)

FR4 STRIPLINE

FR4 STRIPLINE

LINE CARD

SWITCH CARD

MAX3803

MAX3803

Typical Application Circuit

19-2699; Rev 0; 2/03

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.

Pin Configuration appears at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

PART

TEMP RANGE

PIN-PACKAGE

MAX3803UBP-T

0

°C to +85°C

5 x 4 UCSP