A simple driving and frequency characterization technique for two-phase charge-coupled devices

A driving technique for two-phase devices is described which requires only one clock both to drive the charge-coupled device (CCD) and to reset a floating output diffusion. This driving technique has permitted the development of a simple method of frequency characterization of two-phase CCD's. This involves the use of a single clock pulse of variable mark-space ratio, allowing the measurement of high-frequency CCD performance using circuitry, most of which is operated at low frequency.