Sextant Avionique

Michel Prost

Christian Pitot

Philippe Bieth

The disclosure relates to the acquisition of a binary analog signal at input of a digital integrated circuit after its range of voltage variation has been matched with that acceptable by the digital integrated circuit by means of a resistive divider bridge. It is usual to define the architecture of an ASIC digital integrated circuit on the basis of libraries of pre-characterized cells. The disclosed device is designed to increase the possibilities of choice open to the integrated circuit designer, in enabling him to one pre-characterized cell of a Schmitt trigger for its top switching threshold and another for its bottom switching threshold. It consists of a circuit comprising, at input, a bank of Schmitt triggers of different types, followed by a discrete-rendering logic circuit deducing the logic state of the binary input analog signal of the combination of the output states of the input Schmitt triggers.

Circuit for the acquisition of binary analog signals

Phase-locked loop oscillators that are designed to set the clock rate of electronic circuits based on combinations of logic circuits and to be integrated, at the same time as these electronic circuits, into one and the same chip. There is proposed a phase-locked loop oscillator based purely on combinations of logic circuits so as not to make use of integration techniques different from those used for the electronic circuits based on combinations of logic circuits, for which they are designed to set the clock rate.

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Paris, France

Michel Prost