  ADCs sit at the interface of the analog and digital worlds and fundamentally
determine what information is available in the digital domain for processing.
This paper shows that a configurable ADC can be designed for signals with non
constant information as a function of frequency such that within a fixed power
budget the ADC maximizes the information in the converted signal by frequency
shaping the quantization noise. Quantization noise shaping can be realized via
loop filter design for a single channel delta sigma ADC and extended to common
time and frequency interleaved multi channel structures. Results are presented
for example wireline and wireless style channels.
