Asynchronous analog-to-digital converter having adaptive reference control
An analog signal (AIN) is received and filtered by a filter (202). The input signal is compared by comparison circuit (204) to first and second reference signals from reference circuit (205) to generate a first comparison result, and the first comparison result and a first time stamp corresponding t...
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| Zusammenfassung: | An analog signal (AIN) is received and filtered by a filter (202). The input signal is compared by comparison circuit (204) to first and second reference signals from reference circuit (205) to generate a first comparison result, and the first comparison result and a first time stamp corresponding to the first comparison result are registered. A first portion of a digital signal is generated by conversion circuit (212) from the first comparison result. At least one of the first and second reference signals is adjusted dynamically. A second comparison result is generated if the analog signal reaches an adjusted one of the first and second reference signals within a predetermined interval, and a second portion of the digital signal is generated from the second comparison result. |
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