Patent ID: 8928504
Filing Date: 2015-01-06
Classification: H03M

Abstract:
1. A multiplying analog-to-digital converter, comprising: a sample-and-hold unit, for sampling an analog signal to obtain a sample level; an analog-to-digital converting unit, for converting the analog signal to obtain a digital signal, wherein the level range of the digital signal is between a minimum and a maximum; a digital-to-analog converting unit, for converting the digital signal to obtain a recovered signal level; an operating unit, for providing an output signal according to the difference between the sample level and the recovered signal level; a comparator, for comparing the level of the output signal with an upper threshold level and a lower threshold level and accordingly providing an indicating signal representing the comparison result, wherein the upper threshold level and the lower threshold level define a predetermined level range; and a controller, for shifting a value of the digital signal and accordingly providing an adjusted digital signal when the indicating signal indicates that the level of the output signal is outside the predetermined level range.