Linear charge injection to charge-coupled devices using capacitive metering

The input circuit of a charge-coupled device has the form of an m.o.s.f.e.t. Linear charge injection has been achieved by the negative feedback caused by a capacitor connected in series with the equivalent source electrode. The capacitor charge is reset between each sampling event. The distortion is similar to that obtained with fill-and-spill techniques, and the input voltage amplitude is more convenient.