Invention Grant
- Patent Title: Methods and apparatus for calibrating stages in pipeline analog-to-digital converters
- Patent Title (中): 管道模数转换器校准阶段的方法和装置
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Application No.: US13591784Application Date: 2012-08-22
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Publication No.: US08736471B2Publication Date: 2014-05-27
- Inventor: Bjornar Hernes
- Applicant: Bjornar Hernes
- Applicant Address: US MA Chelmsford
- Assignee: Hittite Microwave Corporation
- Current Assignee: Hittite Microwave Corporation
- Current Assignee Address: US MA Chelmsford
- Agency: Foley Hoag LLP
- Agent Rajesh Vallabh
- Main IPC: H03M1/10
- IPC: H03M1/10

Abstract:
A calibration control circuit is provided for calibrating a stage in a pipeline analog-to-digital converter (ADC). The stage includes an analog-to-digital subconverter (ADSC) and a multiplying digital-to-analog converter (MDAC). The calibration control circuit includes circuitry coupled to comparators in the ADSC to force the comparators to output a predetermined digital output signal set by a calibration control signal when the ADC is in a calibration mode to thereby control reference switches in an analog multiplexer (AMUX) to selectively apply reference voltages to capacitors in the MDAC to obtain a predetermined stage residue signal.
Public/Granted literature
- US20140055295A1 METHODS AND APPARATUS FOR CALIBRATING STAGES IN PIPELINE ANALOG-TO-DIGITAL CONVERTERS Public/Granted day:2014-02-27
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