Patent ID: 8416111

Claim:
An apparatus for converting a continuous-time, continuously variable signal into a sampled and quantized signal, comprising: an input line for accepting an input signal that is continuous in time and continuously variable; a plurality of processing branches coupled to the input line, each of said processing branches including: (a) a continuous-time quantization-noise-shaping circuit, (b) a sampling/quantization circuit coupled to an output of the continuous-time quantization-noise-shaping circuit, and (c) a digital bandpass filter coupled to an output of the sampling/quantization circuit; and a combining circuit, coupled to outputs of a plurality of said processing branches, that combines signals on said outputs into a final output signal, wherein each of a plurality of the continuous-time quantization-noise-shaping circuits includes an adjustable circuit component which, when adjusted, changes a frequency of a quantization-noise frequency-response minimum of said continuous-time quantization-noise-shaping circuit, and wherein each of a plurality of said digital bandpass filters includes at least one adjustable parameter which, when adjusted, changes a frequency passband of said digital bandpass filter.