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A 16-channel CMOS Inverter Transimpedance Amplifier Array for 3-D Image Processing of Unmanned Vehicles

무인차량용 3차원 영상처리를 위한 16-채널 CMOS 인버터 트랜스임피던스 증폭기 어레이

  • Received : 2015.10.26
  • Accepted : 2015.11.28
  • Published : 2015.12.01

Abstract

This paper presents a 16-channel transimpedance amplifier (TIA) array implemented in a standard $0.18-{\mu}m$ CMOS technology for the applications of panoramic scan LADAR (PSL) systems. Since this array is the front-end circuits of the PSL systems to recover three dimensional image for unmanned vehicles, low-noise and high-gain characteristics are necessary. Thus, we propose a voltage-mode inverter TIA (I-TIA) array in this paper, of which measured results demonstrate that each channel of the array achieves $82-dB{\Omega}$ transimpedance gain, 565-MHz bandwidth for 0.5-pF photodiode capacitance, 6.7-pA/sqrt(Hz) noise current spectral density, and 33.8-mW power dissipation from a single 1.8-V supply. The measured eye-diagrams of the array confirm wide and clear eye-openings up to 1.3-Gb/s operations. Also, the optical pulse measurements estimate that the proposed 16-channel TIA array chip can detect signals within 20 meters away from the laser source. The whole chip occupies the area of $5.0{\times}1.1mm^2$ including I/O pads. For comparison, a current-mode 16-channel TIA array is also realized in the same $0.18-{\mu}m$ CMOS technology, which exploits regulated-cascode (RGC) input configuration. Measurements reveal that the I-TIA array achieves superior performance in optical pulse measurements.

Keywords

Array;CMOS;Inverter;LADAR;RGC;TIA;Unmanned vehicles

References

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Cited by

  1. A Dual-Channel CMOS Transimpedance Amplifier Array with Automatic Gain Control for Unmanned Vehicle LADARs vol.65, pp.5, 2016, https://doi.org/10.5370/KIEE.2016.65.5.831
  2. 1-Gb/s Readout Amplifier Array for Panoramic Scan LADAR Systems vol.65, pp.3, 2016, https://doi.org/10.5370/KIEE.2016.65.3.452

Acknowledgement

Supported by : 한국연구재단