The HXR14450 is a quad channel array of low-power Trans-impedance Linear Amplifiers with built-in clock and data recovery units. It is a member of the family of Optical Receiver Transmitter Array (ORTA) products for the PAM4 modulation format, targeted at the parallel optical links market. Together with a PIN detector array or discrete detectors, high-capacity, high-availability optical links can be designed for  next-generation Ethernet and datacom applications.

The HXR14450 integrates the linear transimpedance pre-amplifier, the linear post-amplifier, clock, and data recovery units, and a versatile CML output stage for four optical channels.

Key Features

  • 275mW per channel power consumption
  • -6dBm (OMA outer) each lane sensitivity for 56Gbps PAM4 signal
  • Up to 3 mApp overload
  • Integrated clock and data recovery unit
  • Independent, per channel RSSI
  • 5kOhm typical differential gain
  • 500mVppd output voltage swing and adjustable output swing
  • Linear operation with internal AGC
  • Programmable output de-emphasis
  • Adaptive linear equalizer and DFE in CDR
  • Both reference-less and reference mode CDR supported
  • On-chip testability; EOM, JTOL, PRBS generator/checker, local/remote loopback
  • Graycode encoder/decoder
  • QSFP56 MSA compliance
  • Dedicated pin for RX_disable to support low power mode
  • Optimized for isolated and common cathode photo-detector arrays from multiple vendors

Applications List

  • Next-generation Ethernet Optical Receiver Modules up to 300m SR
  • Proprietary multi-channel small form factor optical modules, like CFP8 and QSFP56
  • Host side ingress and egress for CEI-56GVSR; CEI-56G-MR

Ordering Information

PartTemperature RangePin-Package
HXR14450-DNT-40°C to +95°CDie size Target 1250µm x 4300µm