Startup Calibration and Digital Temperature Compensation for an Open-Loop VCO Based ADC Architecture
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United States of America
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Nov 28, 2024
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May 26, 2023
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May 26, 2023
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Abstract
A digital microphone includes a first modulation path having an input for receiving an analog input signal and an output for generating a first digital signal; a second modulation path having an input for receiving the analog input signal and an output for generating a second digital signal; a summing circuit having a first input for receiving the first digital signal, a second input for receiving the second digital signal, and an output for generating a digital calibration path signal; and a difference circuit having a first input for receiving the first digital signal, a second input for receiving the second digital signal, and an output for generating a digital signal path signal.
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