Patent ID: 8994570
Filing Date: 2015-03-31
Classification: H03M

Abstract:
1. An analogue-to-digital converter, comprising: one or more reference ladders coupled to receive an analogue input signal to be quantized, each reference ladder comprising a plurality of impedances, and a current source providing a reference current through the plurality of impedances, a plurality of nodes being interleaved with the plurality of impedances; a switching arrangement, for coupling and decoupling one or more of the plurality of impedances from the input signal; a plurality of comparators, each comparator coupled to receive signals from respective nodes of the one or more reference ladders, and to provide an output comparison signal; an output, configured to receive the plurality of output comparison signals and to output a digital quantized signal corresponding to the input signal; and control logic, configured to control the switching arrangement in dependence on the quantized signal.