Patent ID: 6980145

Claim:
An analog-to-digital converter comprising: a first module comprising: an analog input that receives an analog signal; a digital dither input that receives a digital dither signal; and a digital output that outputs a digital output signal comprising a first component that is primarily a function of the analog signal, and a second component that is primarily a function of the digital dither signal; wherein the functional relationship between the digital dither input of the first module and the digital output of the first module is characterized by a digital dither transfer function; and a second module comprising: a digital input communicatively coupled to the digital output of the first module; a digital dither input that receives a signal indicative of the digital dither signal; a first sub-module comprising a digital dither input that receives the signal indicative of the digital dither signal and a digital output, wherein the functional relationship between the digital dither input of the first sub-module and the digital output of the first sub-module is characterized by a transfer function that is based on the digital dither transfer function of the first module; and a digital output that outputs a digital output signal reflective of the digital output signal from the first module with the second component substantially removed.