Patent ID: 7936298
Filing Date: 2011-05-03
Classification: H03M

Abstract:
1. An integrated circuit comprising threshold generation circuitry for generating at least one differential voltage signal for use within a comparator circuit, the threshold generation circuitry comprising: at least one common mode current generation circuit arranged to generate at least one common mode current signal comprising a common mode component, whereby said at least one common mode current signal is combined with at least one input current signal comprising a differential input component to produce a combined current signal comprising a combined signal common mode component and a combined signal differential component; and conversion circuitry arranged to receive the combined current signal and to convert the combined current signal into the at least one differential voltage signal for use within the comparator circuit; wherein the threshold generation circuitry further comprises feedback circuitry arranged to: receive an indication of the combined signal common mode component; compare the received indication of the combined signal common mode component to a reference value; and regulate the at least one common mode current signal generated by the at least one common mode current generation circuit based at least partly on the comparison of the received indication of the combined signal common mode component to the reference value.