Low voltage CMOS/CCD Mixed Signal Processors

CMOS/CCD circuits allow mixed signal processing where CCD perform analog and CMOS logic perform digital operations. Traditional interface between CMOS and CCD makes low voltage operations difficult. We propose a way to ease low voltage operation by utilizing some well known analog techniques.

• One of the two chips implemented 32-tap programmable FIR filter (techical report). This chip successfully demonstrated the feasibility of the low voltage interface concept.
• The other chip is in testing stages. This CMOS/CCD 256-tap Oversampling D/A converter is geared toward performance.