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Continuous Approximation Analog-to-Digital Converter and Its Conversion Time Correction Method

A digital converter, conversion time technology, applied in the direction of analog/digital conversion calibration/testing, etc., can solve the problems of cost burden, waste of circuit area or power consumption, incorrect conversion results, etc.

Active Publication Date: 2017-11-07
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, over-designing this approach will result in a waste of circuit area or power consumption
[0005] On the other hand, in order to solve the problem of shortening the conversion time caused by the temperature drift of the process voltage, the traditional continuous approximation analog-to-digital converter must have more accurate time synchronization at design time to overcome the problem of incorrect conversion results
However, having a more precise time synchronization function will create a cost burden

Method used

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Embodiment Construction

[0045] The content of the present invention will be explained by the following examples. In the following embodiments and drawings, elements that are not directly related to the present invention have been omitted and not shown, and the dimensional ratios between the elements shown in the drawings are only for understanding, and are not intended to be limited to Actual implementation ratio.

[0046] The first embodiment of the present invention is used to illustrate a continuous approximation analog-to-digital converter with conversion time correction means, such as figure 1 As shown, the continuous approximation analog-to-digital converter 1 includes a conversion circuit 11 and a conversion time correction device 13 . The conversion time correction device 13 includes a detection circuit 131 and an adjustment circuit 133 electrically connected to the detection circuit 131 and the conversion circuit 11 .

[0047] The conversion circuit 11 of the continuous approximation analo...

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Abstract

The invention discloses a continuous approximation analog-to-digital converter and a conversion time correction method thereof. The continuous approximation analog-to-digital converter includes a conversion circuit and a conversion time correction device, wherein the conversion circuit has a conversion time under a process voltage temperature deviation. The detection circuit is used for detecting a conversion time state of the conversion circuit, and adjusting the conversion time of the conversion circuit according to the conversion time state.

Description

technical field [0001] The invention relates to a continuous approximation analog-to-digital converter and a conversion time correction method thereof. More specifically, the present invention relates to a continuous approximation analog-to-digital converter capable of correcting conversion time and a conversion time correction method thereof. Background technique [0002] Analog-to-digital converters can convert continuous signals in analog form into discrete signals in digital form, among which successive approximation analog-to-digital converters (Successive Approximation Register Analog-to-Digital Converter) have been used more and more in recent years. [0003] However, under different Process Voltage Temperature (PVT) offsets of the continuous approximation analog-to-digital converter, the conversion time for converting the analog voltage to the digital voltage may vary greatly. For the conversion time of a continuous approximation analog-to-digital converter, process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/10
Inventor 林见儒陈昱璋黄诗雄
Owner REALTEK SEMICON CORP
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