ANALOG-TO-DIGITAL CONVERSION DEVICE, PREFERABLY FOR MOBILE TELEPHONY

摘要

An analog-to-digital conversion device (100) is described, comprising: an input stage (200) arranged to receive an input signal (Vin) and to provide an output analog signal (vin') as a function of the input signal (vin); an analog-to-digital conversion block (300) arranged to receive the output analog signal (vin') and to provide a respective output digital signal (Vout). The input stage (200) comprises: a first voltage buffer (Bl) arranged to provide the output analog signal (vin') to the conversion block (300) as the translation of the input signal (vin) of an amount equal to a translation voltage; a second voltage buffer (B2) arranged to provide a first reference signal (Vrif1) to the conversion block (300) which is representative of the translation of a first reference voltage (Vss) of an amount equal to the translation voltage, so that the conversion block (300) result be able to store the input signal (vin) as the difference of the input signal (vin) and the first reference voltage (Vss; Vcc) regardless of the translation voltage.