HXR45400-DNJ

Overview

The HXR45400-DNJ is a low-power, single-ended input, quad-channel linear Trans-Impedance Amplifier (TIA) array belonging to the Optical Receiver Transmitter Array (ORTA) product family. It operates on a 3.3V or 2.9V supply and supports 53GBaud PAM4 applications for next-generation 400G/800G optical transceivers. Key electrical parameters include up to 43GHz typical bandwidth, 175mW/ch power consumption in low power mode, and 10pA/√Hz input-referred current noise density. The device features wide adjustable output voltage swing, linear operation up to 3mAppSE overload with internal AGC, and an I²C interface.

Feature Summary

• Patented adaptive biasing scheme designed for exceptionally low input referred noise density and high bandwidth
• Linear operation capability up to 3mA overload utilizing internal Automatic Gain Control (AGC)
• Integrated control functions including RSSI, LOS, and Rx Disable accessible via I²C interface
• Compliance with 100G Lambda MSA and IEEE 802.3cd standards

Applications

• Design of compact linear Receiver Optical Sub-Assemblies (ROSA)
• Next-generation 400G and 800G optical transceivers
• Systems utilizing advanced modulation schemes such as 53GBaud PAM4

Procurement Notes

Verify the specific suffix 'DNJ' against official Renesas documentation to confirm package type and moisture sensitivity level. Confirm industrial operating temperature range requirements (-40°C to 95°C) match system specifications. Ensure compatibility with PIN detector arrays for ROSA integration. Validate I²C interface configuration for control signals.

Selection Notes

Select this component for designs requiring quad-channel TIA integration with low power consumption. Consider the 2.9V supply option for optimized energy efficiency. Evaluate the 43GHz bandwidth against signal integrity requirements. Ensure the host system supports the necessary I²C communication protocol for AGC and status monitoring.

Part Context

The HXR45400 extends the capabilities of the single-channel HXR44100 by providing four channels in one array. It is part of the ORTA family, intended to work alongside PIN detectors. This architecture allows for scalable and compact optical receiver designs suitable for high-speed data center interconnects.

Replacement Considerations

The HXR44100 serves as a single-channel alternative within the same product family. Verify channel count requirements before substitution. No other direct multi-channel substitutes are documented in the provided source material.