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MAX3800：3.2Gbps Adaptive Equalizer and Cable Driver

Industry's First 3.2Gbps Adaptive Cable Equalizer/Driver

The MAX3800 is a +3.3V adaptive cable equalizer and cable driver implemented together on a single chip. It is designed for coaxial and twin-axial cable point-to-point communications applications. The driver features differential current-mode logic (CML) inputs and outputs as well as adjustable output amplitude. The equalizer includes differential CML data inputs and outputs, a loss-of-signal (active-low LOS) output, and a cable integrity monitor (CIM) output. 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 copper cable in high-frequency interconnect applications. The MAX3800 is available in a 32-pin TQFP package with exposed pad and consumes only 200mW at +3.3V. The driver can be disconnected from the power supply when it is not needed, resulting in a 40% reduction in supply current.

Key Features Single +3.3V Operation Typical Power Dissipation = 200mW at +3.3V Data Rates Up to 3.2Gbps Adjustable Cable Driver Output Amplitude Equalizer Automatically Adjusts for Different Cable Lengths 0dB to 30dB Equalization at 1.6GHz (3.2Gbps) Loss-of-Signal (active-low LOS) Indicator Cable Integrity Monitor (CIM) On-Chip Input and Output Terminations Low External Component Count Operating Temperature Range = 0°C to +85°C ESD Protection on Cable Inputs and Outputs

MAX3800: Typical Application Circuit Applications/Uses Backplane and Interconnect Applications High-Speed Links in Communications and Data Systems SDH/SONET Transmission Equipment

DataSheet

Parametrics

Design kits & evaluation modules

• MAX3800EVKIT

Quality and Environmental Data

• MAX3800.pdf

Ordering Information