The HXR42400 Trans-impedance 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 Trans-impedance pre-amplifier, the limiting post-amplifier, and a versatile CML output stage for four optical channels. Available in die form.

Key Features

  • 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

Applications List

  • 100Gbase-LR4 Ethernet transceivers
  • 128G Fibre Channel modules / AOCs
  • InfiniBand 100G EDR transceivers and active cables
  • Proprietary multi-channel optical modules

Ordering Information

Part NumberTemp RangePin-Package
HXR42400-DNU1 HXR42400-TNU2-5°C to +95°CBare Die: 1.975 x 3.350mm
HXR42400EVBRoom TempEvaluation Board