FX805: 25GHz Linear Instrument TIA + 25GHz S&H Amp

Features                                                                                                                                           
  • Integrated Optical-Receiver Instrumentation IC
  • DC-to 25GHz bandwidth TIA with 0-35GHz S&H
  • Fixed, linear, 440Ω diff electrical gain TIA
  • First Stage TIA trans-impedance 307Ω
  • External analog DC current adjustment
  • Compatible with common-cathode photodiode
  • Low power dissipation, 720mW
  • <3.5uArms input-referred TIA noise; flat group-delay, high-fidelity S&H Amplifier
  • 0/-5V supplies; separate Vddo supply for common-mode match
  • Operation -20 to 95C; sold as dice

​
​Description                                                                                                                                       

The FX805 integrates a fast 25GHz low-gain, linear, dc-coupled, trans-impedance amplifier (TIA) with a high-speed, 25GHz dual-rank Sample and Hold (S&H) Amplifier, creating an analog-front-end (AFE) instrument IC that delivers ‘optical-reference-receiver’ instrumentation functionality to above 28Gb/s.  

Applications                                                                                                                                      

  • Optical receiver testing, 25G/100G Ethernet
  • DC Operation provides Optical Modulation Amplitude and Extinction Ratio
  • Automated Test Equipment
  • 25-32Gb/s Ethernet, FibreChannel, OTN, custom
  • Bench and System Test Instruments