Patent ID: 6437724
Filing Date: 2002-08-20
Classification: H03M

Abstract:
An electronic circuit for converting an analog differential signal to a corresponding n-bit digital signal having a resolution of 2n voltage levels, the differential signal being defined as the difference between a first analog signal and a second analog signal, said circuit comprising:2n voltage comparators each having a first input terminal and a second input terminal for the differential signal, and an output terminal for providing a comparator output signal; a first floating network of 2n resistive elements connected in series to which the first analog signal is applied, said first network having a plurality of first network nodes each coupled to the first input terminal of a corresponding one of said comparators and wherein one of said first network nodes is a first middle node coupled to the first analog signal; and a second floating network of 2n resistive elements connected in series to which the second analog signal is applied, said second network having a plurality of network nodes each coupled to the second input terminal of the corresponding one of said comparators and wherein one of said second network nodes is a second middle node coupled to the second analog signal, each comparator output signal representing at least in part the n-bit digital signal.