Analog-to-digital converter controlling device for hyperfrequency electronic field, has summing element summing compensation noise to input signal of loop, where noise is equal to signal multiplied by multiplicative noise of converter

摘要

The device has a summing element (15) summing a compensation noise to an analog input signal (e) of a control loop in a sigma-delta modulator based on a reference voltage of a current source that supplies an analog-to-digital converter (11). The compensation noise is equal to the input signal that is multiplied by a multiplicative noise of the converter. A differential amplifier generates the compensation noise and receives an input voltage of the loop. An independent claim is also included for a sigma-delta modulator for converting an input analog signal to an output digital signal.