Analog to digital converter including differential vco

a technology differential vco, which is applied in the direction of code conversion, pulse generator, pulse technique, etc., can solve the problems of limiting the performance of analog to digital converter, reducing the dynamic range, and affecting the output signal, so as to improve the dynamic range, the effect of increasing the range of output signal and the dynamic rang

Active Publication Date: 2017-09-21
IUCF HYU (IND UNIV COOP FOUND HANYANG UNIV)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0016]The present disclosure provides an analog to digital converter including a differential VCO that increases a range of an output signal and a dynamic range, does not require an additional circuit by not being affected by a reference frequency, and is advantageous in area, power consumption and yield.
[0027]As described above, according to various embodiments of the present disclosure, the analog to digital converter including a differential VCO may increase the range of the output signal and the dynamic range, does not require the additional circuit by not being affected by the reference frequency, and may be advantageous in the area, the power consumption and the yield.

Problems solved by technology

However, since a V-to-frequency transfer function of the VCO is operated non-linearly, there is a disadvantage in that a harmonic distortion occurs in an output signal.
The DC offset limits an output range of a feedback digital to analog converter and may lead to a reduction in a dynamic range, which limits the performance of the analog to digital converter.

Method used

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  • Analog to digital converter including differential vco
  • Analog to digital converter including differential vco
  • Analog to digital converter including differential vco

Examples

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Embodiment Construction

[0040]Hereinafter, various exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. The exemplary embodiments disclosed in the present specification may be variously modified. Specific embodiments are described in the drawings and may be described in detail in the detailed description. It should be understood, however, that the specific embodiments disclosed in the accompanying drawings are intended only to facilitate understanding of various embodiments. Accordingly, it is to be understood that the technical idea is not limited by the specific embodiments disclosed in the accompanying drawings, but includes all equivalents or alternatives falling within the spirit and scope of the disclosure.

[0041]Terms including an ordinal number such as ‘first’, ‘second’, etc. may be used to describe various components, but the components are not to be construed as being limited to the terms. The terms are used to distinguish on...

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PUM

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Abstract

An analog to digital converter is provided. The analog to digital converter includes: an arithmetic operator combining an analog input signal with a feedback signal; a loop filter filtering an output signal of the arithmetic operator; a quantizer quantizing an output signal of the loop filter to output a digital signal; and a feedback converting the digital signal to output a feedback signal, in which the quantizer includes: a plurality of VCOs each receiving a positive output signal and a negative output signal of the loop filter and outputting VCO signals; a plurality of samplers receiving the VCO signals output from the plurality of VCOs, respectively and outputting sampled signals; and a phase detector detecting a phase difference in the sampled signals output from the plurality of samplers, respectively, to detect a phase difference in two VCO signals output from the plurality of VCOs, respectively.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority from Korean Patent Application No. 10-2016-0033362 filed on Mar. 21, 2016 and Korean Patent Application No. 10-2017-0027481 filed on Mar. 3, 2017 in the Korean Intellectual Property Office the disclosure of which is incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION[0002]Field of the Invention[0003]Apparatuses and methods consistent with the present disclosure relate to an analog to digital converter including a differential VCO, and more particularly, to an analog to digital converter including a differential VCO that uses a phase domain and reduces an area and power consumption.[0004]Description of the Related Art[0005]Recently, there is an increasing demand for multi-mode or multi-band in wireless communication. To this end, researches on a digital RF front-end are actively under way. In particular, to support the multi-mode or the multi-band, we are trying to reduce a use of a...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H03M3/00H03K19/21H03M7/16H03K3/03
CPCH03M3/464H03K3/0315H03K19/21H03M7/165H03M3/422H03M3/496H03M3/436H03M1/0665H03M1/60H03M1/64
Inventor YOO, CHANGSIKJEONG, DONGHYEOKNOH, JINHO
Owner IUCF HYU (IND UNIV COOP FOUND HANYANG UNIV)
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