Integration of analog circuits inside digital blocks

A circuit for sensing local operating properties of an integrated circuit is disclosed. The circuit may include one or more sensor circuits configured to sense the local operating properties of the integrated circuit. The sensor circuits may receive a supply voltage with a magnitude in a limited range from a digital power supply that is different from the digital power supply that provides power to functional circuits in the integrated circuit. Level shifters may be coupled to the sensor circuits to shift output signals from the sensor circuits to levels that correspond to the digital power supply that provides power to functional circuits in the integrated circuit. Counters and a shift register may be coupled to the level shifters to receive the shifted output signals, the values of which may be used to determine the local operating properties of the integrated circuit as sensed by the sensor circuits.