Fecha de publicación: 05/05/2011 Fuente: Wipo "precision agriculture" A read-out interface circuitry (ROIC) (10) connectable to a sensor (29) is provided, the ROIC (10) includes at least one phase detector circuit (20) to compare phase difference between an input reference signal and an output signal from the sensor (29), and at least one charge pump circuit (40) connectable to the at least one phase detector circuit (20) wherein an output of the at least one charge pump circuit (40) is convertible to a direct current (DC) voltage.