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Adjusting circuit for pipeline analog-to-digital converter and pipeline analog-to-digital converter

A technology of analog-to-digital converter and adjustment circuit, applied in the direction of analog-to-digital converter, analog-to-digital conversion, code conversion, etc., can solve the problems of decreasing sampling frequency and increasing power consumption, so as to reduce power consumption and increase sampling frequency , to ensure the effect of precision

Active Publication Date: 2020-03-03
北京特邦微电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this ensures stable performance, it leads to a decrease in sampling frequency and increased power consumption.

Method used

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  • Adjusting circuit for pipeline analog-to-digital converter and pipeline analog-to-digital converter
  • Adjusting circuit for pipeline analog-to-digital converter and pipeline analog-to-digital converter
  • Adjusting circuit for pipeline analog-to-digital converter and pipeline analog-to-digital converter

Examples

Experimental program
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Embodiment 1

[0047] figure 1 is a schematic diagram of an adjustment circuit for a pipelined analog-to-digital converter according to an exemplary embodiment of the present invention.

[0048] The regulating circuit according to an exemplary embodiment of the present invention may be connected to a digital-to-analog conversion and amplification MDAC unit in one stage of a pipelined analog-to-digital converter. But those skilled in the art should understand that the present invention is not limited thereto, and the regulating circuit of the exemplary embodiment of the present invention can be used in various analog-to-digital converters known in the art, and the specific structure of the pipelined analog-to-digital converter nor limited to figure 2 , Figure 3a with Figure 3b shown.

[0049] In one possible implementation, such as figure 1As shown, the regulating circuit 11 includes:

[0050] MDAC comparison unit 111, the first input terminal of the MDAC comparison unit 111 inputs...

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PUM

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Abstract

The invention discloses an assembly line analog-digital converter and a regulating circuit for the same. The regulating circuit is connected with a MDAC unit in the first grade of the assembly line analog-digital converter, and comprises a MDAC contrast unit, a conversion unit, and a control unit, wherein the first input end of the MDAC contrast unit inputs a first analog signal, the second input end thereof inputs a first digital signal, and the output end outputs a second analog signal; the input end of the conversion unit inputs the second analog signal, and the output end thereof outputs a conversion signal; the input end of the control unit inputs the conversion signal, the output end thereof outputs a regulating signal to the MDAC unit and the MDAC contrast unit. By use of the embodiment of the invention, the regulating circuit is connected with the MDAC unit in the first grade of the assembly line analog-digital converter, the regulating signal is output to regulate a working parameter of the MDAC unit, stabilize a working status of the MDAC unit, and compress the design margin; the sampling frequency is improved and the power consumption is lowered while the precision is guaranteed.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to an adjustment circuit for a pipeline analog-digital converter and a pipeline analog-digital converter. Background technique [0002] A pipelined analog-to-digital converter (ADC, Analog-to-Digital Converter) is composed of several analog-to-digital conversion units with similar functions, and each analog-to-digital conversion unit includes a digital-to-analog conversion and amplification (MDAC) unit. [0003] The accuracy of the pipeline ADC is closely related to the signal processing accuracy of the MDAC unit, and the working parameters of the MDAC unit will affect the signal processing accuracy of the MDAC unit. For example, the MDAC unit includes an operational amplifier (OPA). The non-ideality of the OPA has a great influence on the accuracy of the MDAC unit. The dynamic error has an impact, and the dynamic error of the MDAC unit will deteriorate as the sampling rate of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/00H03M1/12
CPCH03M1/002H03M1/1245
Inventor 殷秀梅杨培
Owner 北京特邦微电子科技有限公司