Analogue=to=digital converter for control unit of gradient amplifier for MRI

摘要

The analogue-to-digital converter has a differential amplifier (10) to compare an analogue input signal (AIN) with an analogue converter signal (ACNV) and to generate an analogue difference signal (ADIF). A digital-to-analogue converter (12) generates the analogue converter signal from a digital converter signal (DCNV). A control device (20) generates the digital converter signal as an output signal (DOUT) of the analogue-to-digital converter. An integrator (14) is provided to integrate the analogue difference signal and to generate an analogue integrator signal (AINT). A first analogue-to-digital converter (16) is provided to generate a digital integrator signal (DINT) from the analogue integrator signal. The control device is set up to calculate the digital converter signal as a function of at least the digital integrator signal.