Delta-sigma data converter assembly has feedback path that is provided for feeding back digital quantization signal as modulator input signal to differentiator

摘要

A delta-sigma modulator (2) has a differentiator (5), reset integrator (6), quantizer (7) and digital to analog converter (9). The differentiator generates difference signal (D) between analog modulator input signal (In') and analog feedback signal (Va). The digital to analog converter receives the digital quantization signal and outputs feedback signal to differentiator. A feedback path (11) is provided for feeding back the digital quantization signal as modulator input signal to differentiator. The reset integrator generates an integration signal (X) by integrating or summing the difference signal. The quantizer receives the integration signal and generates a digital quantization. An independent claim is included for method for performing delta-sigma data conversion.