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Digital-to-analog converter (DAC) circuits employing resistor rotator circuits configured to be included in analog-to-digital converter (ADC) circuits

A circuit and comparison circuit technology, which is applied in the field of DAC circuits, can solve the problems of reducing area consumption, reducing the space of other circuit systems, and large area consumption.

Pending Publication Date: 2021-04-30
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This increase in digital signal length typically results in greater area consumption for ADC circuits and DAC circuits for ADC circuits employing more circuitry
However, the increased area consumption reduces the space available for other circuitry within the device

Method used

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  • Digital-to-analog converter (DAC) circuits employing resistor rotator circuits configured to be included in analog-to-digital converter (ADC) circuits
  • Digital-to-analog converter (DAC) circuits employing resistor rotator circuits configured to be included in analog-to-digital converter (ADC) circuits
  • Digital-to-analog converter (DAC) circuits employing resistor rotator circuits configured to be included in analog-to-digital converter (ADC) circuits

Examples

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Embodiment Construction

[0043] Several exemplary aspects of the present disclosure are now described with reference to the accompanying drawings. The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any aspect described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other aspects.

[0044] Aspects disclosed in the DETAILED DESCRIPTION include a digital-to-analog converter (DAC) circuit employing a resistor rotator circuit configured to be included in an analog-to-digital converter (ADC) circuit. In one aspect, a DAC circuit includes a plurality of DAC stages, each DAC stage configurable to generate one or more DAC analog signals corresponding to selected resistances of the DAC stage. In particular, each DAC stage is configured to receive a corresponding top voltage and a corresponding bottom voltage. Each DAC stage is configured to generate a certain number of DAC analog signals based on a corresponding top volta...

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Abstract

Digital-to-analog converter (DAC) circuits employing resistor rotator circuits configured to be included in analog-to-digital converter (ADC) circuits are disclosed. In one aspect, a DAC circuit includes multiple DAC stages, each of which may be configured to generate one or more DAC analog signals corresponding to selected resistances within the DAC stage. Each DAC stage is configured to receive a corresponding top and bottom voltage. Each DAC stage is configured to generate a number of DAC analog signals based on the corresponding top voltage and the corresponding bottom voltage, as well as on the selected resistance of the DAC stage. Each DAC stage includes an adjusting circuit comprising a resistance configured to adjust a resistance of the corresponding DAC stage such that a parallel combination of the resistance of the adjusting circuit and a resistance of a next DAC stage is maintained at an ideal resistance level.

Description

[0001] priority claim [0002] This patent application claims application number entitled "Digital-to-Analog Converter (DAC) Circuitry Employing a Resistor Rotator Circuit Configured for Inclusion in an Analog-to-Digital Converter (ADC) Circuit," filed September 19, 2018 16 / 135,985, assigned to the present assignee and expressly incorporated herein by reference. technical field [0003] The technology of the present disclosure relates generally to digital-to-analog converter (DAC) circuits, and more particularly to DAC circuits employing resistor circuits configured to be included in analog-to-digital converter (ADC) circuits. Background technique [0004] A digital-to-analog converter (DAC) circuit is a device that converts digital code into a representative analog signal. For example, a converted analog signal may be a reproduction of a native analog signal that was previously converted to digital code by an analog-to-digital converter (ADC) circuit. A common use of DAC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M1/42H03M1/36H03M1/46H03M1/68H03M1/76
CPCH03M1/361H03M1/42H03M1/46H03M1/68H03M1/76H03M1/462H03M1/785
Inventor B·L·普赖斯
Owner QUALCOMM INC
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