Signal Processor Drives Charge-Coupled Devices

A single-chip, 3-channel image signal processor designed for charge-coupled device (CCD) or contact image sensor (CIS) systems such as color scanners, FAX machines, and industrial quality-control cameras, VSP3010 provides a direct interface between the CCD/CIS image sensor and the digital signal processor (DSP). The VSP3010 provides the 12-bit resolution and 12-MHz operating speed needed for 3-channel color mode systems. Each channel contains sensor signal sampling, black-level adjustment, and a programmable gain amplifier to maintain optimum input signal levels. Inputs are multiplexed into a 12-bit ADC.