Digitally self-calibrating pipeline analog-to-digital converter
February 24, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesAnalog-to-digital converter using absolute-value conversion Analog-digital converter Self-calibrating pipelined subranging analog-to-digital converter Architecture for high sampling rate, high resolution analog-to-digital converter system Digital error correction system for subranging analog-to-digital converters Pipelined A/D converter High-speed A/D conversion using a series of one-bit conversion stages Accuracy bootstrapping Analog-to-digital conversion circuit with improved differential linearity Patent #: 5416485 InventorsApplicationNo. 201250 filed on 02/24/1994US Classes:341/120, CONVERTER CALIBRATION OR TESTING341/162Serial conversions with change in signalExaminersPrimary: Hoff, Marc S.Attorney, Agent or FirmInternational ClassH03M 001/10AbstractA self-calibrating pipeline analog-to-digital converter having a plurality of analog-to-digital conversion units and including a recursive calibrating section operable for calibrating errors associated with an immediately preceding first conversion unit. The recursive calibrating section includes circuitry for receiving an analog output signal generated from said first conversion unit in response to an analog input signal provided to the first conversion unit; circuitry for receiving a digital output signal generated from the first conversion unit in response to a digital input signal provided to the first conversion unit; circuitry for generating a conversion signal corresponding to a quantized representation of the analog output signal; and circuitry for generating a calibration signal having a value equal to the conversion signal in response to the digital input signal being a first digital value and having a value equal to the sum of the conversion signal and a calibration value in response to the digital input signal being a second digital value.Other References
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