Back to results
US 2025/0274136 A1Published application
Single-input dual-output analog-to-digital converter
AssigneeQorvo US, Inc.
InventorsNadim Khlat, Christopher Truong Ngo
Life of this patent
Estimating the term…
Abstract
A single-input dual-output (SIDO) analog-to-digital converter (ADC) is disclosed. Herein, the SIDO ADC is configured to receive an analog input voltage and concurrently output a digital average and a digital peak of the received analog input voltage. Moreover, the SIDO ADC can be configured with a configurable dynamic range to output the digital average and the digital peak with sufficient granularity when the analog input voltage is associated with a larger peak-to-average ratio (PAR). As such, the SIDO ADC can effectively overcome the limitations in an existing single-input single-output (SISO) ADC.
Claims20
A single-input dual-output (SIDO) analog-to-digital converter (ADC) comprising:
- a scaling circuit configured to receive an analog input voltage and scale the analog input voltage down to a sense voltage;
- a digital average voltage circuit configured to:
- store a baseline voltage and a plurality of threshold voltages each higher than the baseline voltage to thereby establish a plurality of threshold regions;
- count each occurrence of the sense voltage being higher than or equal to a highest one of the plurality of threshold voltages that falls below the sense voltage during a predefined measurement period in a corresponding one of a plurality of first counters;
- reduce the sense voltage by a respective one of a plurality of offset values corresponding to the highest one of the plurality of threshold voltages that falls below the sense voltage;
- and
- output a digital average value indicating an average of the analog input voltage during the predefined measurement period based on a respective value in each of the plurality of first counters;
- and
- a digital peak voltage circuit configured to:
- count a respective duration of the sense voltage staying within each of the plurality of threshold regions during the predefined measurement period in a plurality of second counters;
- and
- output a digital peak value indicating a peak of the analog input voltage during the predefined measurement period based on a respective value in each of the plurality of first counters and each of the plurality of second counters.
9 more elements
A method for converting an analog input voltage into a digital average value and a digital peak value comprising:
- receiving the analog input voltage and scaling the analog input voltage down to a sense voltage;
- storing a baseline voltage and a plurality of threshold voltages each higher than the baseline voltage to thereby establish a plurality of threshold regions;
- counting each occurrence of the sense voltage being higher than or equal to a highest one of the plurality of threshold voltages that falls below the sense voltage during a predefined measurement period in a corresponding one of a plurality of first counters;
- reducing the sense voltage by a respective one of a plurality of offset values corresponding to the highest one of the plurality of threshold voltages that falls below the sense voltage;
- outputting the digital average value indicating an average of the analog input voltage during the predefined measurement period based on a respective value in each of the plurality of first counters;
- counting a respective duration of the sense voltage staying within each of the plurality of threshold regions during the predefined measurement period in a plurality of second counters;
- and
- outputting the digital peak value indicating a peak of the analog input voltage during the predefined measurement period based on a respective value in each of the plurality of first counters and each of the plurality of second counters.
5 more elements
A wireless device comprising at least one single-input dual-output (SIDO) analog-to-digital converter (ADC), comprising:
- a scaling circuit configured to receive an analog input voltage and scale the analog input voltage down to a sense voltage;
- a digital average voltage circuit configured to:
- store a baseline voltage and a plurality of threshold voltages each higher than the baseline voltage to thereby establish a plurality of threshold regions;
- count each occurrence of the sense voltage being higher than or equal to a highest one of the plurality of threshold voltages that falls below the sense voltage during a predefined measurement period in a corresponding one of a plurality of first counters;
- reduce the sense voltage by a respective one of a plurality of offset values corresponding to the highest one of the plurality of threshold voltages that falls below the sense voltage;
- and
- output a digital average value indicating an average of the analog input voltage during the predefined measurement period based on a respective value in each of the plurality of first counters;
- and
- a digital peak voltage circuit configured to:
- count a respective duration of the sense voltage staying within each of the plurality of threshold regions during the predefined measurement period in a plurality of second counters;
- and
- output a digital peak value indicating a peak of the analog input voltage during the predefined measurement period based on a respective value in each of the plurality of first counters and each of the plurality of second counters.
9 more elements
Dependencies are inferred from the claim text.