Method and system for analog - to - digital - conversion by means of digital pulse width modulation (pwm)

摘要

A system for performing an analog - to - digital - conversion of an analog input signal into a digital output signal by means of digital pulse width modulation, wherein the sampling - frequency of the analog - to - digital - conversion from a decimation clock pulse can be controlled, and the resolution of the analog - to - digital - conversion from a quantization clock pulse is controlled; the system comprises:a. a deviation of the invention is to more strongly, which a deviation signal with the use of the analog input signal, of the decimation clock and of a digital pulse return coupling signal is calculated;example, a converter, the said deviation signal in the digital pulse converts the rear of the coupling signal; andc. a decimator, the rear of the coupling, the digital pulse signal with the use of the decimation clock and of the quantization clock is decimated, in order to obtain the digital output signal.