A multi-channel CMOS feedforward transimpedance amplifier array for LADAR systems

Seung Hoon Kim, Sung Min Park

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


A multi-channel CMOS transimpedance amplifier(TIA) array is realized in a 0.18-μm 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-dBΩ 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.

Original languageEnglish
Pages (from-to)1737-1741
Number of pages5
JournalTransactions of the Korean Institute of Electrical Engineers
Issue number12
StatePublished - Dec 2015

Bibliographical note

Publisher Copyright:
© The Korean Institute of Electrical Engineers.


  • Array
  • CMOS
  • PIN photodiode
  • TIA


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