Semiconductor device for digitizing an electric analog signal

摘要

An analog/digital converter implemented on an MIS structure having a gate electrode in the form of a resistance layer across which the potential gradient is applied. The analog signal supplied to the gate electrode and is converted into a shift of an inversion layer below the gate electrode. The digital signal is obtained by means of determining the number of surface regions which are present below the gate electrode and which can be electrically connected to the inversion layer.