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Proceedings Paper

A 16-channel CMOS preamplifier for laser ranging radar receivers
Author(s): Ru-qing Liu; Jing-guo Zhu; Yan Jiang; Meng-lin Li; Feng Li
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Paper Abstract

A 16-channal front-end preamplifier array has been design in a 0.18um CMOS process for pulse Laser ranging radar receiver. This front-end preamplifier array incorporates transimpedance amplifiers(TIAs) and differential voltage post-amplifier(PAMP),band gap reference and other interface circuits. In the circuit design, the regulated cascade (RGC) input stage, Cherry-Hooper and active inductor peaking were employed to enhance the bandwidth. And in the layout design, by applying the layout isolation structure combined with P+ guard-ring(PGR), N+ guard-ring(NGR),and deep-n-well(DNW) for amplifier array, the crosstalk and the substrate noise coupling was reduced effectively. The simulations show that a single channel receiver front-end preamplifier achieves 95 dBΩ transimpedance gain and 600MHz bandwidth for 3 PF photodiode capacitance. The total power of 16-channel front-end amplifier array is about 800mW for 1.8V supply.

Paper Details

Date Published: 22 October 2015
PDF: 5 pages
Proc. SPIE 9674, AOPC 2015: Optical and Optoelectronic Sensing and Imaging Technology, 96742M (22 October 2015); doi: 10.1117/12.2202386
Show Author Affiliations
Ru-qing Liu, Academy of Opto-Electronics (China)
Jing-guo Zhu, Academy of Opto-Electronics (China)
Yan Jiang, Academy of Opto-Electronics (China)
Meng-lin Li, Academy of Opto-Electronics (China)
Feng Li, Academy of Opto-Electronics (China)

Published in SPIE Proceedings Vol. 9674:
AOPC 2015: Optical and Optoelectronic Sensing and Imaging Technology
Haimei Gong; Nanjian Wu; Yang Ni; Weibiao Chen; Jin Lu, Editor(s)

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