A Multi-channel CMOS Feedforward Transimpedance Amplifier Array for LADAR Systems

라이다 시스템용 멀티채널 CMOS 피드포워드 트랜스임피던스 증폭기 어레이

  • Received : 2015.10.13
  • Accepted : 2015.11.18
  • Published : 2015.12.01


A multi-channel CMOS transimpedance amplifier(TIA) array is realized in a $0.18-{\mu}m$ CMOS technology for the applications of panoramic scan LADAR systems. Each channel consists of a PIN photodiode and a feed-forward TIA that exploits an inverter input stage followed by a feed-forward common-source amplifier so as to achieve lower noise and higher gain than a conventional voltage-mode inverter TIA. Measured results demonstrate that each channel achieves $76-dB{\Omega}$ transimpedance gain, 720-MHz bandwidth, and -20.5-dBm sensitivity for $10^{-9}$ BER. Also, a single channel dissipates the power dissipation of 30 mW from a single 1.8-V supply, and shows less than -33-dB crosstalk between adjacent channels.


Array;CMOS;LADAR;PIN photodiode;TIA


Supported by : 한국연구재단


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