Asynchronous successive approximation analog-to-digital converter and related methods and apparatus
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United States of America Patent
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Jul 11, 2017
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Jun 8, 2017
app pub date -
Dec 2, 2015
filing date -
Dec 2, 2015
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Abstract
An ultrasound device including an asynchronous successive approximation analog-to-digital converter and method are provided. The device includes at least one ultrasonic transducer, a plurality of asynchronous successive-approximation-register (SAR) analog-to-digital converters (ADC) coupled to the at least one ultrasonic transducer, at least one asynchronous SAR in the plurality having a sample and hold stage, a digital-to-analog converter (DAC), a comparator, and control circuitry, wherein a DAC update event following at least one bit conversion is synchronized to a corresponding DAC update event of at least one other ADC in the plurality of ADCs.
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