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Analog to digital converter and signal processing system

An analog-to-digital converter, analog-to-digital conversion technology, applied in the direction of analog-to-digital converter, analog/digital conversion, code conversion, etc., can solve problems such as high-speed operation difficulties, and achieve the effect of miniaturization

Inactive Publication Date: 2012-05-16
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In addition, as a problem unique to closed-loop amplifiers, there is a problem that high-speed operation (that is, high-speed sampling operation) is difficult

Method used

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  • Analog to digital converter and signal processing system
  • Analog to digital converter and signal processing system
  • Analog to digital converter and signal processing system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0055] 1. First Embodiment (First Configuration Example of AD Converter)

[0056] 2. Second Embodiment (Second Configuration Example of AD Converter)

no. 3 example

[0057] 3. Third Embodiment (Third Configuration Example of AD Converter)

[0058] 4. Fourth Embodiment (Fourth Configuration Example of AD Converter)

no. 5 example

[0059] 5. Fifth Embodiment (fifth configuration example of AD converter)

[0060] 6. Sixth Embodiment (Sixth Configuration Example of AD Converter)

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PUM

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Abstract

Disclosed herein is an analog to digital converter including an analog to digital conversion stage of at least one stage adapted to produce digital data of a value corresponding to a relationship to two analog signals inputted thereto and output two analog residual signals. The analog to digital conversion stage includes a signal production section, a comparison section, a first outputting section, a second outputting section, and a changeover section. The comparison section outputs first digital data when a first comparison result that the voltage value of the first analog signal is lower than the voltage value of the second analog signal is obtained whereas the comparison section outputs second digital data when a second comparison result that the voltage value of the first analog signal is higher than the voltage value of the second analog signal is obtained.

Description

technical field [0001] The present disclosure relates to analog-to-digital (AD) converters and signal processing systems that convert analog signals to digital signals. Background technique [0002] A pipeline type AD converter is generally used as an AD converter having a sampling frequency of about 100 MS / s and having a resolution of 8-14 bits. [0003] This is because the pipeline type AD converter exhibits an advantage in that processing of N bits is performed at a time with 2 to the nth power comparators in one clock cycle, compared with the parallel type AD converter. [0004] Specifically, the pipeline type AD converter has the advantages of making the number of comparators small, requiring no high-precision comparators, and performing N-bit processing dividedly in several clock cycles. Therefore, a pipeline type AD converter is more widely used than a parallel type AD converter. [0005] Here, the operation of the pipeline type AD converter is described taking a ca...

Claims

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Application Information

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IPC IPC(8): H03M1/12
CPCH03M1/12H03M1/44
Inventor 清水泰秀江藤慎一郎工藤孝平
Owner SONY CORP