A Linear-Mode LiDAR Sensor Using a Multi-Channel CMOS Transimpedance Amplifier Array.
In: IEEE Sensors Journal, Jg. 18 (2018-09-01), Heft 17, S. 7032-7040
Online
academicJournal
Zugriff:
This paper presents a linear-mode optical sensor for the feasible applications of unmanned vehicle LiDAR systems, in which a pulsed-erbium fiber laser is exploited as a light source and a 16-channel transimpedance amplifier (TIA) array is utilized in an optical Rx module with low-cost InGaAs PIN photodiodes. In particular, a voltage-mode CMOS feedforward (VCF-TIA) is newly proposed to achieve twice higher transimpedance gain with lower noise and similar bandwidth characteristics than a conventional inverter TIA, thereby enabling longer detection. Test chips of the 16-channel VCF-TIA array realized in a standard 0.18- $\mu \text{m}$ CMOS process demonstrate 76.3-dB $\Omega $ transimpedance gain, 6.3-pA/sqrt(Hz) average noise current spectral density, less than −33-dB crosstalk between channels, and 29.8-mW power dissipation per channel from a single 1.8-V supply. Automatic gain control is also equipped to extend input dynamic range for near-range detection. Hence, the proposed linear-mode optical sensor clearly detects the reflected optical pulses from the target of 5% reflection rate within the range of 0.5–25 m. [ABSTRACT FROM AUTHOR]
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Titel: |
A Linear-Mode LiDAR Sensor Using a Multi-Channel CMOS Transimpedance Amplifier Array.
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Autor/in / Beteiligte Person: | Hong, Chaerin ; Kim, Seung-Hoon ; Kim, Ji-Hoon ; Park, Sung Min |
Link: | |
Zeitschrift: | IEEE Sensors Journal, Jg. 18 (2018-09-01), Heft 17, S. 7032-7040 |
Veröffentlichung: | 2018 |
Medientyp: | academicJournal |
ISSN: | 1530-437X (print) |
DOI: | 10.1109/JSEN.2018.2852794 |
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