| 摘要 |
Various innovative circuit techniques that make possible a single chip, cost effective implementation of a CCD signal digitizing circuit are disclosed. Among the various features of the single chip digitizing circuit is the use of a single clock to sample the CCD signal and to digitize the analog signal. By providing a tight control over the minimum required settling time delay at the input of the analog to digital converter (ADC), the speed of the circuit is optimized. Other features include support for various modes of CCD operations, reference voltage feedback from ADC to sampling circuit to compensate for offset voltage, dual register serial input/output circuit, and multiplexed ADC input.
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