Patent ID: 6326914
Filing Date: 2001-12-04
Classification: H03M

Abstract:
An analog-to-digital converter characterized in thatsaid converter comprises a first set of first current cells (CC) coupled in parallel between a first current line (L+) and a second current line (L-) of a differential current bus, said lines carrying a balanced differential input current (Iin1+, Iin1-) corresponding to a differential analog input signal (Vin+, Vin-) of said converter,each first current cell of said set comprising a first current source (ICC; T1+, T1-) adapted to supply a first additional current (64.times.Iref) to said first and second current lines under control of first comparators (COMP1+, COMP1.times.), andthe first comparators of the first current cells of said first set are coupled in cascade, the first comparators having first inputs (IN1+, IN1-) coupled to said first and second current lines, second inputs (DIN1[i-1]+, DIN1[i-1]-) coupled to outputs of first comparators of a preceding first current cell in the cascade, and outputs (DIN1[i+1]+, DIN1[i+1]-) coupled to second inputs of first comparators of a next first current cell in the cascade.