Patent ID: 7391352
Filing Date: 2008-06-24
Classification: H03M

Abstract:
1. A comparison circuit for an analog/digital converter comprising: a network of comparators each comparing an analog voltage to be converted with a reference voltage (Vref), the reference voltages being distributed over a range in which the analog voltage can vary, each comparator comprising a direct output and an inverse output, wherein each output, direct or inverse, is linked to the input of a voltage follower, the outputs of each voltage follower being connected either to inputs of a first network of resistors delivering at its outputs, mean voltages that are the average of those present on direct outputs of the comparators receiving reference voltages similar in their distribution over the range, or to inputs of a second network of resistors delivering at its outputs, mean voltages that are the averages of those present on inverse outputs of comparators receiving reference voltages similar in their distribution over the range.