28Gbps - 4 Channel LR4 Receiver

The HXR42400 Transimpedance and Limiting Amplifier array for LR4 parallel optical applications supports data rates up to 28Gbps and optical reach above +10km. Together with a four-channel photo diode array or discrete detectors, high-capacity, high-availability optical links can be designed for long reach telecom or datacom applications. The 3.3V SiGe device integrates the transimpedance preamplifier, the limiting post-amplifier, and a versatile CML output stage for four optical channels. Available in die form.


  • 40uApp receiver sensitivity for 10-12 BER at 28Gbps
  • Greater than 2.4mApp overload
  • 150mW per channel power consumption with low power setting
  • Automatic Gain and Threshold Controls
  • Adjustable output swing size and pre-emphasis mode
  • Signal Detect Programmable threshold with SQUELCH function
  • Independent RSSI, Temperature monitor
  • Optimized for isolated and common cathode photo-detector arrays from multiple vendors
  • Control lines accessible on both sides of chip
  • QSFP MSA compliance

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Temp. Grade Carrier Type Buy Sample
HXR42400-DNT Active DICEW WAFER C WFP Availability
HXR42400-EVB Active BD0 BOARD C Box Availability

Technical Documentation

Title Other Languages Type Format File Size Date
HXR42400 Product Brief Product Brief PDF 259 KB May 15, 2017