ASYNCHRONOUS ANALOG-TO-DIGITAL CONVERTER HAVING RATE CONTROL

摘要

An apparatus is provided. A comparison circuit (204) is configured to receive an analog signal (AIN). A reference circuit (205) is coupled to the comparison circuit and is configured to provide a plurality of reference signals to the comparison circuit. A conversion circuit (212) is coupled to the comparison circuit and is configured to detect a change in the output of the comparison circuit. A time-to-digital converter (TDC)(210) is coupled to the comparison circuit. A timer (208) is coupled to the comparison circuit. A rate control circuit (218) is coupled to the conversion circuit. An output circuit (216) is coupled to the rate control circuit and the TDC, where the output circuit is configured to output at least one of a synchronous digital representation of the analog signal and an asynchronous digital representation of the analog signal.