ADC circuitry

Multiple-path analogue to digital converters are known. The present invention relates to a multi-path ADC circuitry in which the paths may operate as independent converters. An ADC circuit 200 has first and second conversion paths 201a, 201b for converting analogue signals to digital and is operable...

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Hauptverfasser: Andrew James Howlett, Aniruddha Satoskar, David Paul Singleton
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creator Andrew James Howlett
Aniruddha Satoskar
David Paul Singleton
description Multiple-path analogue to digital converters are known. The present invention relates to a multi-path ADC circuitry in which the paths may operate as independent converters. An ADC circuit 200 has first and second conversion paths 201a, 201b for converting analogue signals to digital and is operable in first and second modes. In the first mode, the first and second conversion paths are connected to respective first and second input nodes 202a, 202b to receive and convert full scale first and second analogue input signals Ain1, Ain2 to separate digital outputs Dout1, Dout2. In the second mode, the first and second conversion paths are both connected to the first input node 202a, to convert the first analogue input signal Ain1 to respective first and second digital signals, and the first and second conversion paths are configured for processing different signal levels of the first analogue input signal. A selector 207 selects the first digital signal or the second digital to be output as an output signal based on an indication of amplitude of the first analogue input signal. The converter may find application in devices using more than one microphone, where it may provide better reliability oin detecting spoken commands.
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An ADC circuit 200 has first and second conversion paths 201a, 201b for converting analogue signals to digital and is operable in first and second modes. In the first mode, the first and second conversion paths are connected to respective first and second input nodes 202a, 202b to receive and convert full scale first and second analogue input signals Ain1, Ain2 to separate digital outputs Dout1, Dout2. In the second mode, the first and second conversion paths are both connected to the first input node 202a, to convert the first analogue input signal Ain1 to respective first and second digital signals, and the first and second conversion paths are configured for processing different signal levels of the first analogue input signal. A selector 207 selects the first digital signal or the second digital to be output as an output signal based on an indication of amplitude of the first analogue input signal. 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subjects BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
title ADC circuitry
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