Nowadays, portable devices have become increasingly widespread thanks to both significant technological scaling and for efficient battery life management. In this domain, Power Management Integrated Circuit (PMIC) plays a key role. It is intended for several functions ranging from charging, monitoring battery status, and applying voltage scaling according to the operating state the device is in. Modern PMICs represent true System-on-Chips (SoCs): in fact, in order to handle the increasing complexity of the analog circuitry, the digital component results in an increasing number of IPs. In this thesis, a dedicated ADC Controller used to monitoring various input/output measurement for PMIC application is presented.