A dual-channel CMOS transimpedance amplifier array with automatic gain control for unmanned vehicle LADARs
- 주제(키워드) AGC , CMOS , Dynamic range , Feedforward , LADAR , TIA
- 등재 SCOPUS, KCI등재
- 발행기관 Korean Institute of Electrical Engineers
- 발행년도 2016
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000131158
- 본문언어 한국어
- Published As http://dx.doi.org/10.5370/KIEE.2016.65.5.831
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
In this paper, a dual-channel feed-forward transimpedance(TIA) array is realized in a standard 0.18-μm CMOS technology which exploits automatic gain control function to provide 40-dB input dynamic range for either detecting targets nearby or sensing imminent danger situations. Compared to the previously reported conventional feed-forward TIA, the proposed automatic-gain-control feed-forward TIA(AFF-TIA) extends the input dynamic range 25 dB wider by employing a 4-level automatic gain control circuit. Measured results demonstrate the linearly varying transimpedance gain of 47 to 72 dBΩ, input dynamic range of 1:100, the bandwidth of ≧670 MHz, the equivalent input referred noise current spectral density of 6.9 pA/VHZ, the maximum sensitivity of - 26.8 dBm for 10-12 BER, and the power consumption of 27.6 mW from a single 1.8-V supply. The dual-channel chip occupies the area of 1.0 × 0.73 mm2 including I/O pads. Copyright © The Korean Institute of Electrical Engineers.
more