Effects of quantization noise in parallel arrays of analog-to-digital converters

High-speed A/D conversion can be achieved by using a parallel array of digitizers interleaved in time and in voltage. Alternatively, the input analog signal can be first decomposed into several frequency bands and then have each frequency band digitized by a separate A/D converter. This paper investigates the quantization noise effects in such structures, and shows that by using a filter bank before and after a parallel array of A/D converters, an increase in the effective number of bits of resolution can be obtained