Patent ID: 6100834
Filing Date: 2000-08-08
Classification: H03M

Abstract:
An analog to digital converter comprising:a fast internal analog to digital converter (ADC);an amplifier with a closed-loop forward gain A;a digital signal prediction circuit coupled in a negative feedback path and having, as its input signal, a digitized error signal;a digital to analog converter (DAC) included in the feedback path;an input differencer;in which:an output of the DAC and the analog system input signal are connected as inputs to the differencer;an output of the differencer is an analog error signal that is connected as an input to the amplifier;an output of the amplifier is as an input to the fast internal ADC;a scaled output of the fast ADC is the digitized error signal, which is connected directly as the input signal of the digital signal prediction circuit;an output of the digital signal prediction circuit is operatively coupled as an input of the DAC.