The HXR32400 Transimpedance Amplifier with Limiting Output stage, 4th generation device is a lower power member of the family of Optical Receiver Transmitter Array (ORTA) products targeted at the 28Gbps parallel optical links market. Together with a PIN detector array or discrete detectors, high-capacity, high-availability optical 100GBase-CLR4 links can be designed for telecom and datacom applications. The SiGe device integrates the transimpedance preamplifier, the limiting post-amplifier and a versatile CML output stage for four optical channels.


  • 50uApp receiver sensitivity for 10-12 BER at 28Gbps
  • Greater than 2.4mApp overload
  • 100mW 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

Part Number Part Status Pkg. Type Temp. Grade Carrier Type Buy Sample
Obsolete WAFER C WFP


Title language Type Format File Size Date
Optical Interconnect Overview Overview PDF 216 KB
HXR32400 Product Brief Product Brief PDF 219 KB