高速CCD成像电路抗串扰技术

薛旭成; 李洪法; 郭永飞

Volume 4 Issue 6

Dec. 2011

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Article Contents

Chinese Optics > 2011 > 4(6): 611-616.

XUE Xu-cheng, LI Hong-fa, GUO Yong-fei. Anti-crosstalk techniques for high-speed CCD imaging circuit[J]. Chinese Optics, 2011, 4(6): 611-616.

Citation:

XUE Xu-cheng, LI Hong-fa, GUO Yong-fei. Anti-crosstalk techniques for high-speed CCD imaging circuit[J]. Chinese Optics, 2011, 4(6): 611-616.

XUE Xu-cheng, LI Hong-fa, GUO Yong-fei. Anti-crosstalk techniques for high-speed CCD imaging circuit[J]. Chinese Optics, 2011, 4(6): 611-616.

Citation:

XUE Xu-cheng, LI Hong-fa, GUO Yong-fei. Anti-crosstalk techniques for high-speed CCD imaging circuit[J]. Chinese Optics, 2011, 4(6): 611-616.

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Anti-crosstalk techniques for high-speed CCD imaging circuit

Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

Received Date: 06 Sep 2011
Rev Recd Date: 18 Nov 2011
Publish Date: 25 Dec 2011

Abstract

Abstract

In order to overcome the crosstalk of a high speed CCD imaging circuit, the reasons of the crosstalk are analyzed and the crosstalk models of CCD imaging circuit are established. The striplines instead of microstrips are used for the multi-channel CCD video signals and the guard lines are used for the striplines to isolate further. To reduce the crosstalk caused by the common impedance of a power supply, the isolated multi-channel power supplies are designed and the effective routing method for decoupling capacitors is used to lower parasitic inductances. The analog and digital parts are layout separately and a whole ground plane is used to reduce the ground bounce. Experiments for a CCD imaging circuit with much severe crosstalk problems are performed by these techniques, results show that the channel isolation is large than 60 dB. The crosstalk is reduced efficiently and the image quality is improved.
- high speed CCD,
- imaging circuit,
- crosstalk,
- transmission line

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References

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