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Article: CCDs inspire ADCs to embrace signal processing. (computer-controlled display)(includes related article on analog to digital converters)
- Article from:
- EDN
- Article date:
- March 13, 1998
- Author:
CopyrightCOPYRIGHT 1998 Reed Business Information, Inc. (US). This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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You need more than just a good A/D converter to effectively interface with a CCD image sensor. Newer converter architectures include signal-processing circuitry that simplifies the task while improving overall performance.
The CCD image sensor is a ubiquitous photon-to-current transducer for applications ranging from relatively slow scanners to high-end, still and full-motion cameras. As with most real-world transducers, under this simple statement is a complex interfacing challenge.
Although you can easily connect your system to a single-element CCD, this simple sensor would not have much practical use except in limited circumstances. As the CCD elements ...