28 Gbps Quad Transimpedance / Limiting Amplifier


  • 100 GbE-LR4/ER4 and OTU4 receivers
  • CFP, CFP2, CFP4, and QSFP28 transceivers


  • Supports data rates up to 28 Gbps
  • Quad limiting TIA/LIA
  • High gain, 6 KΩ differential
  • High overload current
  • Low input referred noise
  • High bandwidth
  • Bandwidth/peaking adjust
  • RSSI functionality
  • Low sensitivity penalty due to channel crosstalk
  • Low power consumption
  • Available in die form, (3.2 mm x 1.7 mm)


The IN2844TA is a quad transimpedance / limiting amplifier (TIA/LIA) designed to support data rates up to 28 Gbps.

The IN2844TA offers a wide input dynamic range due to its low input referred noise and high input overload capability. With 6 KΩ of differential gain, the IN2844TA provides ample gain to drive subsequent gearbox and re-timer ICs.

The IN2844TA has a bandwidth/peaking adjust function to allow the user to fine-tune optical receiver frequency response to compensate for output flex connector losses.

The IN2844TA provides an accurate indicator of the received signal strength via the RSSI output pad. It also includes an integrated feedback circuit to control the decision threshold of the limiting amplifier, maintaining 50% eye crossing.

The IN2844TA has very low sensitivity penalty due to channel crosstalk

The IN2844TA has low power consumption and operates of a single +3.3V power supply. The IN2844TA is available in die form (3.2 mm x 1.7 mm).


Interconnect Group

Inside Data Centers

Product Type

Transimpedance Amplifiers

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