Analog-to-Digital Conversion Using Self-Averaging Analog Hadamard Networks

Abstract

Control-bounded analog-to-digital conversion as described in the work of Loeliger et al. opens opportunities for entirely new analog circuit topologies. The structure of such a converter is shown in Fig. 1. In this paper, we propose such a converter where the analog linear system is a network of N fully connected identical integrators, with uniform sensitivity to noise and mismatch across the network. Nonetheless, the converter achieves a nominal conversion error similar to that of a ΔΣ converter with a N-th order loop filter.