Analog-to-Digital and Digital-to-Analog Converter, Related Integrated Circuit, Electronic System and Method
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United States of America
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May 24, 2019
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May 24, 2019
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A converter circuit is used to selectively convert an analog input voltage into a digital output signal or a digital input signal into an analog output voltage as a function of a mode signal. The converter circuit includes a control circuit configured to generate a start-of-conversion signal. A ramp generator is configured to, when the mode signal indicates an analog-to-digital conversion, generate a timer stop signal after a time interval that is determined as a function of the value of the analog input voltage, thereby implementing an analog-to-time conversion. When the mode signal indicates a digital-to-analog conversion, ramp generator is configured to vary the ramp signal until a ramp stop signal is set and, in response to the ramp stop signal, determine the analog output voltage as a function of the ramp signal, thereby implementing a time-to-analog conversion.
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