28 Gbps Transimpedance / Limiting Amplifier


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


  • Supports data rates up to 28 Gbps
  • Single limiting TIA/LIA
  • High gain, 6.0 kΩ differential
  • High overload current
  • Low input referred noise
  • High bandwidth
  • Bandwidth/peaking adjust
  • RSSI functionality
  • Threshold adjust
  • Low power consumption
  • Available in die form, (0.9 mm x 0.9 mm)


The IN2841TA transimpedance / limiting amplifier (TIA/LIA) is designed to support data rates up to 28 Gbps.

The IN2841TA 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 IN2841TA provides ample gain to drive subsequent gearbox and re-timer ICs.

The IN2841TA 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 IN2841TA 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 DCA threshold adjust function allows the user to adjust the eye cross in support of longer reach ER4 applications.

The IN2841TA has a low power consumption and operates off of a single +3.3 V power supply. The IN2841TA is available in die form (0.9 mm x 0.9 mm).


Interconnect Group

Inside Data Centers

Product Type

Transimpedance Amplifiers

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