Invention Grant
- Patent Title: Pipeline analog-to-digital converter stages with improved transfer function
- Patent Title (中): 具有改进传输功能的管道模数转换器级
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Application No.: US13748430Application Date: 2013-01-23
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Publication No.: US08797196B2Publication Date: 2014-08-05
- Inventor: Pedro Miguel Ferreira de Figueiredo
- Applicant: Synopsys, Inc.
- Applicant Address: US CA Mountain View
- Assignee: Synopsys, Inc.
- Current Assignee: Synopsys, Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Fenwick & West LLP
- Main IPC: H03M1/06
- IPC: H03M1/06

Abstract:
A connection scheme is used to selectively connect a dither capacitor included in a calibrated stage of a pipeline analog-to-digital converter (ADC) in a way that reduces the output voltage swing of the stage. A first terminal of the dither capacitor is coupled to an input of the amplifier. A second terminal of the dither capacitor is coupled to either a first or second reference voltage dependent on a bit value in a Pseudo-Random Binary Sequence (PRBS) if a voltage received by the stage is within a first voltage range. If the stage received voltage is within a second range, the second terminal is coupled to the first reference voltage independent of the PRBS. If the stage received voltage is within a third range, the second terminal is coupled to the second reference voltage independent of the PRBS.
Public/Granted literature
- US20130187802A1 PIPELINE ANALOG-TO-DIGITAL CONVERTER STAGES WITH IMPROVED TRANSFER FUNCTION Public/Granted day:2013-07-25
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