HXR44100-DNJ

Overview

The HXR44100-DNJ is a single-channel linear transimpedance amplifier (TIA) designed for high-speed optical receiver applications. It supports data rates up to 56 Gbps using PAM4 modulation and is optimized for 10 km transmission distances. The device features high receiver sensitivity, an overload capacity of up to 3 mApp, and independent per-channel Received Signal Strength Indicator (RSSI). Key electrical characteristics include a typical differential gain of 5 kΩ and a maximum output swing of 500 mVppd. It operates within a temperature range of -40°C to 95°C.

Feature Summary

• Supports 56 Gbps PAM4 signal processing for extended reach applications
• Provides independent per-channel received signal strength monitoring
• Engineered for high overload tolerance in dense wavelength division multiplexing systems

Applications

• SFP28 optical modules
• 25 Gigabit Ethernet Long Reach links
• 32 Gigabit Fibre Channel interfaces
• 25G Enhanced Data Rate InfiniBand connections

Procurement Notes

Verify the specific suffix DNJ against the manufacturer's current datasheet to confirm package type and pinout compatibility. Ensure the component meets RoHS3 compliance requirements for your assembly process. Cross-reference the active status with authorized distributors to avoid obsolete stock. Confirm thermal management specifications align with your system design constraints.

Selection Notes

Select this TIA when designing optical receivers requiring support for 56 Gbps PAM4 signaling over 10 km distances. It is suitable for applications demanding high sensitivity and robust overload handling. Consider the independent RSSI feature for real-time link performance monitoring. Evaluate the 500 mVppd output swing against downstream driver requirements.

Part Context

This component belongs to the Optical Receiver Transmitter Array (ORTA) product family originally developed by IDT and integrated into Renesas Electronics' portfolio. It serves as a critical front-end amplification stage for high-speed serial optical communication systems. The device addresses the need for compact, high-performance solutions in modern data center interconnects.

Replacement Considerations

The HXR45100-DNJ is a related member of the ORTA family supporting higher data rates up to 112 Gbps. Verify interface compatibility and performance requirements before substituting. No other direct public substitutes are confirmed.