Abstract: A mixer receiving a first analog signal and a first digital signal, corresponding to a succession, at a first frequency, of first messages each comprising a first number of bits, and providing a second analog signal, comprises an analog-to-digital converter of the first analog signal into a second digital signal, corresponding to a succession, at a second frequency greater than the first one, of second messages having a second number of bits smaller than the first one; a digital-to-digital converter of the second digital signal into a third one corresponding to a succession, at the second frequency, of third messages having the first number of bits; an interpolation unit providing a fourth digital signal corresponding to a succession, at the second frequency, of fourth messages having the first number of bits; an adder providing the sum of the third and fourth digital signals; and an output digital-to-analog converter.

Abstract: A converter of a digital signal into a pulse-width modulated signal, comprising a first conversion unit receiving, at a first frequency, successive digital signals each having one of a first determined number of values, and providing first intermediary signals, at the first frequency, each having one of a second determined number of values smaller than the first determined number; a unit performing a decimation of the first intermediary signals to provide second intermediary signals at a second frequency equal to the first frequency divided by the second determined number minus one; and a second conversion unit providing at the second frequency, from the second intermediary signals, a two-state pulse-width modulated signal having a minimum duration in one of the two states which is equal to the inverse of the first frequency, the first conversion unit receiving the pulse-width modulated signal.

Abstract: A mixer receiving a first analog signal and a first digital signal, corresponding to a succession, at a first frequency, of first messages each comprising a first number of bits, and providing a second analog signal, comprises an analog-to-digital converter of the first analog signal into a second digital signal, corresponding to a succession, at a second frequency greater than the first one, of second messages having a second number of bits smaller than the first one; a digital-to-digital converter of the second digital signal into a third one corresponding to a succession, at the second frequency, of third messages having the first number of bits; an interpolation unit providing a fourth digital signal corresponding to a succession, at the second frequency, of fourth messages having the first number of bits; an adder providing the sum of the third and fourth digital signals; and an output digital-to-analog converter.

Abstract: A converter of a digital signal into a pulse-width modulated signal, comprising a first conversion unit receiving, at a first frequency, successive digital signals each having one of a first determined number of values, and providing first intermediary signals, at the first frequency, each having one of a second determined number of values smaller than the first determined number; a unit performing a decimation of the first intermediary signals to provide second intermediary signals at a second frequency equal to the first frequency divided by the second determined number minus one; and a second conversion unit providing at the second frequency, from the second intermediary signals, a two-state pulse-width modulated signal having a minimum duration in one of the two states which is equal to the inverse of the first frequency, the first conversion unit receiving the pulse-width modulated signal.