Calibratable analog-to-digital converter system
AssigneeAnalog Devices, Inc.
InventorsJohn A. McNeill, Michael C. Coln
Life of this patent
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Abstract
A calibratable analog-to-digital converter system with a split analog-to-digital converter architecture including N Analog-to-Digital Converters (ADCs) each configured to convert the same analog input signal into a digital signal. Calibration logic is responsive to the digital signals output by the N ADCs and is configured to calibrate each of the ADCs based on the digital signals output by each ADC.
Claims33
A calibratable analog-to-digital converter system comprising:
- a split analog-to-digital converter architecture including N Analog-to-Digital Converters (ADCs) each configured to convert the same analog input signal into a digital signal;
- and
- calibration logic, responsive to the digital signals output by the N ADCs, and configured to calibrate each of the ADCs based on the digital signals output by each ADC.
A calibratable analog-to-digital converter system comprising:
- a split analog-to-digital converter architecture including N redundant Analog-to-Digital Converters (ADCs) each configured to convert the same analog input signal into a digital signal;
- logic for differencing the digital signals output by the ADCs;
- and
- calibration logic configured to drive each ADC to produce its digital signal based on the analog input signal via a different sequence of decisions and to calculate the errors in each ADC and to drive the errors to a minimum.
An analog-to-digital converter calibration method comprising:
- driving N Analog-to-Digital Converters (ADCs) to each convert the same analog input signal into N digital signals;
- and
- using the N digital signals output by the ADCs to calibrate each ADC.
An ADC calibration method comprising:
- driving N Analog-to-Digital Converters (ADCs) to each convert the same analog input signal into N digital signals;
- and
- calibrating each of the ADCs based on the digital signal output by each ADC.
A calibratable analog-to-digital converter system comprising:
- a split Analog-to-Digital Converter (ADC) architecture including N ADCs each configured to convert the same analog input signal into a digital signal;
- calibration logic configured to calibrate one ADC while at least one other ADC converts the analog signal into a digital signal and to calibrate a different ADC while at least another ADC converts the analog signal into a digital signal.
Dependencies are inferred from the claim text.