MAX3800UHJ

Overview

The MAX3800UHJ is a single-chip adaptive cable equalizer and cable driver designed for coaxial and twin-axial point-to-point communications. It operates on a single +3.3V supply, consuming approximately 200mW. The device supports data rates up to 3.2Gbps and automatically adjusts to attenuation caused by skin-effect losses of up to 30dB at 1.6GHz. It features differential CML inputs and outputs with adjustable output amplitude controlled by an external resistor. The package is a 32-pin TQFP with an exposed pad, suitable for industrial temperatures from 0°C to +85°C.

Feature Summary

• Integrates an adaptive equalizer and cable driver on a single chip
• Automatically compensates for copper cable skin-effect losses
• Features loss-of-signal detection and cable integrity monitoring
• Supports differential or single-ended signal operation

Applications

• High-speed links in communications and data systems
• Backplane and interconnect applications
• SDH/SONET transmission equipment

Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation to confirm lead-free status and package variant. Confirm availability as distribution channels may list discontinued items. Ensure the 32-TQFP-EP footprint matches the target PCB design requirements before finalizing procurement.

Selection Notes

Select this component for high-frequency copper interconnects requiring automatic equalization. Verify that the system operates within the specified 0°C to +85°C temperature range. Ensure the power supply voltage remains between 3.14V and 3.46V for proper functionality. Check if the integrated driver and equalizer meet the required data rate specifications.

Part Context

The MAX3800UHJ belongs to the MAX3800 series of high-speed interface circuits manufactured by Analog Devices / Maxim Integrated. This series focuses on extending the reach of copper cables in gigabit-per-second applications. The UHJ designation specifically identifies the 32-pin TQFP package with an exposed thermal pad.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.