Delta-sigma modulation analog to digital converter

A delta-sigma modulation analog to digital converter for converting an analog input signal to a digital output signal comprising:

• clock generator means for generating a clock signal;
• dither signal generator means, responsive to the clock signal generator means, for generating a dither signal synchronized with the clock signal;
• adder means, coupled to the dither signal generator means, for combining the analog input signal and the dither signal, and outputting a combined signal;
• delta-sigma modulation type quantization means, coupled to the adder means, for quantizing the combined signal in response to the clock signal, and outputting a quantized combined signal;
• and
• decimation circuit means, responsive to the clock signal and coupled to the delta-sigma modulation type quantization means, for substantially eliminating the dither signal from the quantized combined signal and producing a digital signal corresponding to the analog input signal.