Parallel, adaptive delta sigma ADC

An apparatus for adaptive analog-to-digital conversion, said apparatus comprising:

• a frequency modulator unit including a tunable bandpass filter for changing an input analog signal into a modulated analog signal with a frequency spectrum in a bandwidth of interest;
• a parallel delta sigma conversion unit operatively connected to said frequency modulator unit, said parallel delta sigma conversion unit converting said modulated analog signal into a digital signal;
• said parallel delta sigma conversion unit including:
• a plurality of input multipliers operatively connected in parallel, each receiving the modulated analog signal and converting the modulated analog signal to coded samples using a set of codes;
• a plurality of lowpass delta sigma analog-to-digital converters operatively connected in parallel and to said input multipliers, said plurality of lowpass delta sigma analog-to-digital converters converting said coded samples to digital coded samples;
• a plurality of tunable decimation filters operatively connected in parallel and to said lowpass delta sigma analog-to-digital converters, said decimation filters decimating the digital coded samples;
• and
• a plurality of output multipliers operatively connected in parallel and to said decimation filters, said output multipliers converting the decimated digital coded samples to digital uncoded samples using said set of codes;
• a controller operatively connected to said tunable bandpass filter, said input multipliers, and said output multipliers,
• said controller controlling a frequency response of said tunable bandpass filter and controlling said set of codes in order to change a bandwidth and/or dynamic range of the apparatus.