US Patent Application 17804779. NOISE SHAPING IN MULTI-STAGE ANALOG-TO-DIGITAL CONVERTERS simplified abstract

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NOISE SHAPING IN MULTI-STAGE ANALOG-TO-DIGITAL CONVERTERS

Organization Name

QUALCOMM Incorporated==Inventor(s)==

[[Category:Behnam Sedighi of La Jolla CA (US)]]

[[Category:Shi Bu of Los Angeles CA (US)]]

[[Category:Elias Dagher of Laguna Niguel CA (US)]]

[[Category:Dinesh Jagannath Alladi of San Diego CA (US)]]

NOISE SHAPING IN MULTI-STAGE ANALOG-TO-DIGITAL CONVERTERS - A simplified explanation of the abstract

This abstract first appeared for US patent application 17804779 titled 'NOISE SHAPING IN MULTI-STAGE ANALOG-TO-DIGITAL CONVERTERS

Simplified Explanation

The patent application describes methods and apparatus for reducing noise in analog-to-digital converters (ADCs).

  • An ADC is a device that converts analog signals into digital signals.
  • The described ADC includes multiple stages for the conversion process.
  • The first conversion stage produces a residue output.
  • An amplifier is connected to the residue output of the first conversion stage.
  • The second conversion stage is connected to the output of the amplifier.
  • A switched-capacitor network is used to shape the quantization noise of the second conversion stage.
  • The switched-capacitor network provides a second-order or higher noise transfer function.
  • This noise shaping helps to reduce the overall noise in the ADC.
  • The described methods and apparatus can be used to improve the performance of ADCs in various applications.


Original Abstract Submitted

Methods and apparatus for noise shaping in multi-stage analog-to-digital converters (ADCs). An example ADC generally includes a first conversion stage having a residue output; an amplifier having an input selectively coupled to the residue output of the first conversion stage; a second conversion stage having an input selectively coupled to an output of the amplifier; and a switched-capacitor network having a first port coupled to the input of the amplifier and having a second port coupled to the input of the second conversion stage, the switched-capacitor network being configured to provide a second-order or higher noise transfer function for noise shaping of quantization noise of the second conversion stage.

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