The HXR45100 is an extension of low-power, single-ended input, single channel linear Trans-Impedance Amplifier (TIA) of HXR44100, and a member of the Optical Receiver Transmitter Array (ORTA) product family.  Together with a PIN detector, the HXR45100 can be used to design a compact linear ROSA for the next generation 400G optical transceivers with advanced modulation schemes in 53Gbaud PAM4 data rates.

This TIA operates in a 3.3V supply or in a 2.9V supply for low power consumption, providing exceptionally low input referred noise density, wide input optical power range, excellent linearity up to 3mA overload, and a high bandwidth. The chip is designed with the patented adaptive biasing scheme.  


  • High receiver sensitivity for 112Gbps PAM4 Ethernet applications
  • Low power mode in 56GBaud applications 
  • Power consumption as low as 175mW/ch 
  • Industrial operating temperature range -40 to 95°C
  • Up to 5kΩ typical differential gain
  • Wide adjustable output voltage swing
  • Linear operation up to 3mAppSE overload with all internal AGC
  • Up to 43GHz typical bandwidth
  • 10pA/√Hz input referred current noise density
  • RSSI, LOS and Rx disable functions  
  • 100G Lambda MSA and IEEE 802.3cd compliance




Type Title Date
Datasheet - Short-form PDF 179 KB
Product Change Notice PDF 134 KB
End Of Life Notice PDF 717 KB
3 items

Design & Development