Patent ID: 6492930
Filing Date: 2002-12-10
Classification: H03F

Abstract:
An N-bit analog-to-digital (A/D) converter comprising:a front end stage adapted to receive an input to be digitized, and providing first and second currents representative of said input; and a plurality of bit cells coupled in cascade with said front end stage, most significant bit cell first, and successively therefrom towards lesser significant bit cells, said most significant bit cell being coupled to receive said first and second currents from said front end stage, and being adapted to output first and second output currents; and whereina respective ith bit cell is adapted to resolve a single ith digital bit of an overall N-bit digital code output of said A/D converter and establish a value of first and second output currents for application to an (i+1)th bit cell, in accordance with a value of said first and second input currents received from an (iâˆ’1)th bit cell and exclusive of a sample and store operation conducted thereby.