MAX3980

3.125Gbps XAUI Quad Equalizer

Achieve Clean 3.125Gbps XAUI Interfaces over 40in Backplanes

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Status Explanations for product status codes

Active: In Production.

Description

The MAX3980 quad equalizer provides compensation for transmission medium losses for four "lanes" of digital NRZ data at a 3.125Gbps data rate in one package. It is tailor-made for 10-Gigabit Ethernet (10GbE) backplane applications requiring attenuation of noise and jitter that occur in communicating from MAC to PMD or from MAC to Switch. In support of the IEEE®-802.3ae for the XAUI interface, the MAX3980 adaptively allows XAUI lanes to reach up to 40in (1.0m) on FR4 board material.

The equalizer has 100Ω differential CML data inputs and outputs.

The MAX3980 is available in a 44-pin exposed-pad QFN package. The MAX3980 consumes only 700mW at +3.3V or 175mW per channel.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 3 (PDF, 448kB)
Send this datasheet to any email addressE-Mail
An evaluation kit is available: MAX3980EVKIT, MAX3981EVKIT

Key Features

  • Four Differential Digital Data "Lanes" at 3.125Gbps
  • Spans 40in (1.0m) of FR4 PC Board
  • Receiver Equalization Reduces Intersymbol Interference (ISI)
  • Low-Power, 175mW per Channel
  • Standby Mode—Power-Down State
  • Single +3.3V Supply
  • Signal Detect
 

Applications/Uses

  • IEEE-802.3ae XAUI Interface (3.125Gbps)
  • InfiniBand® (2.5Gbps)
   

Key Specifications:

Equalizers (Cable and Circuit Board)
Part Number Applications Data Rate
(Mbps)
Data Rate
(Mbps)
Max. Reach @ Max. Data Rate VSUPPLY
(V)
I/O Type Channels Rx Eq. @ Max. Rate
(dB)
Package/Pins Smallest Available Pckg.
(mm2)
Oper. Temp.
(°C)
Budgetary Price
min max typ max w/pins See Notes
MAX3980 
Copper Cable Interconnect
Ethernet
Printed Circuit Board Interconnect
XAUI
2500 3125
1m FR4
7m Cable
3.3 CML 4 14
TQFN/44
50.4 0 to +85 $15.44 @1k
See All Equalizers (Cable and Circuit Board) (21)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


Diagram

MAX3980: Typical Application Circuit
Typical Application Circuit

More Information

New Product Press Release 2001-10-25 ]

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Information Index

Document Ref.: 19-2153 Rev 3; 2008-12-15
This page last modified: 2008-12-15




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