A method of correcting for output distortion of an analog to digital converter (ADC) is disclosed. The method comprises estimating the output distortion and providing an estimated distortion. The method further comprises combining an output of the ADC with the estimated distortion to compensate for the output distortion and training a calibration module.
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation of U.S. patent application Ser. No. 10/641,332, is now U.S. Pat. No. 6,885,323, entitled ANA CONVERTER filed Aug. 14, 2003 which is incorporated herein by reference for all purposes, which claims priority to U.S. Provisional Patent Application No. 60/483,493 entitled ANALOG-TO-DIGITAL CONVERTER filed Jun. 27, 2003, and claims priority to U.S. Provisional Patent Application No. 60/486,053 entitled ANALOG-TO-DIGITAL CONVERTER filed Jul. 10, 2003, which are incorporated herein by reference for all purposes.
A system and method are disclosed for correcting for output distortion of an analog to digital converter, comprising: estimating the output distortion, providing an estimated distortion, and combining an output of the analog to digital converter with the estimated distortion to compensate for the output distortion. The compensating module for correcting output distortion of an analog to digital converter comprises a calibration module configured to estimate the output distortion and a combiner configured to combine an output of the analog to digital converter with the estimated distortion to compensate the output distortion.
Systems and methods for improving efficiency of a data converter. An example method generates a noise signal, alters the spectrum of the noise signal based on operation of an associated data converter, and supplies the altered spectrum noise signal to the associated data converter. The data converter is a digital-to-analog converter or an analog-to-digital converter. The altered spectrum noise signal is notched at frequencies of interest. The spectrum is altered by sending a signal generated by a random number generator to a delay device and adding the output of the delay device from the output of the random number generator. Also, the spectrum is altered by seeding first and second identical random number generators, delaying the operation of the first random number generator, and adding the output of the delayed first random number generator from the second random number generator.
