19-1999; Rev 4; 7/04
3.2Gbps Adaptive Equalizer
General Description
Features
The MAX3801 is a +3.3V adaptive cable equalizer
designed for coaxial and twin-axial cable point-to-point
communications applications. The equalizer includes
differential CML data inputs and outputs, a loss-of-sig-
nal (LOS) output, and a cable integrity monitor (CIM)
output.
♦ Single +3.3V Operation
♦ Typical Power Dissipation = 125mW at +3.3V
♦ Data Rates Up to 3.2Gbps
♦ Equalizer Automatically Adjusts for Different
Cable Lengths
The adaptive cable equalizer is capable of equalizing
differential or single-ended signals at data rates up to
3.2Gbps. It automatically adjusts to attenuation caused
by skin-effect losses of up to 30dB at 1.6GHz. The
equalizer effectively extends the usable length of cop-
per cable in high-frequency interconnect applications.
♦ 0dB to 30dB Equalization at 1.6GHz (3.2Gbps)
♦ Loss-of-Signal (LOS) Indicator
♦ Cable Integrity Monitor (CIM)
♦ On-Chip Input and Output Terminations
♦ Low External Component Count
The MAX3801 is available in a 24-pin QFN package
with exposed pad and consumes only 125mW at
+3.3V.
♦ Operating Temperature Range = 0°C to +85°C
♦ ESD Protection on Inputs and Outputs
Applications
High-Speed Links in Communications
and Data Systems
Ordering Information
Backplane and Interconnect Applications
SDH/SONET Transmission Equipment
TEMP
PIN-
PACKAGE
CODE
PART
PACKAGE
RANGE
MAX3801UGG
MAX3801UTG
MAX3801UTG+
0°C to +85°C 24 QFN
G2444-1
T2444-2
T2444-2
0°C to +85°C 24 Thin QFN
0°C to +85°C 24 Thin QFN
+Denotes lead-free package.
Pin Configuration appears at end of data sheet.
Typical Application Circuit
+3.3V
MAX3801
EIN
EOUT
CIM
+3.3V
LOS
MAX3801
EOUT
LOS
EIN
CIM
THIS SYMBOL INDICATES 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.