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Signal processing device, method and analog-to-digital converter

A signal processing device, analog and digital technology, applied in the circuit field, can solve the problems of limited effect of randomization, increase system design complexity and resource overhead, etc., achieve the effect of reducing complexity, improving randomization effect, and reducing the number of modules

Active Publication Date: 2021-01-26
上海奥令科电子科技有限公司
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Problems solved by technology

[0004] However, pseudo-random series generators generate pseudo-random numbers, not true random numbers, and have limited effect on randomization. Pseudo-random series generators are newly introduced modules to realize Dither technology, which increases the design complexity of the system and resource overhead

Method used

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  • Signal processing device, method and analog-to-digital converter
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  • Signal processing device, method and analog-to-digital converter

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Embodiment Construction

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other accompanying drawings based on these drawings and obtain other implementations. In order to make the drawing concise, the parts related to the present invention are only schematically shown in each drawing, and they do not represent the actual structure of the product.

[0024] Please refer to figure 1 , which is a schematic structural diagram of an existing ADC. Such as figure 1 As shown, the ADC 100 is a pipelined ADC, including K-level sub-quantization modules, where K is greater than or equal to 1. The analog input signal Vin enters the first-...

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Abstract

The invention provides a signal processing device, method and analog-to-digital converter. Wherein, the signal processing device includes: an input terminal for receiving an analog signal; a quantization module for converting the analog signal into a digital signal, and the digital signal includes a multi-digit digital output code; a randomization module for receiving the h-bit digital output code randomly flipped by thermal noise in the multi-bit digital output code, and using the h-bit digital output code to randomize the quantization path, where h is a positive integer.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to a signal processing device, method and analog-to-digital converter. Background technique [0002] The analog to digital converter (analog to digital converter, ADC) is used to convert analog signals into digital signals, so as to realize the storage and processing of information by digital processing circuits, which is the basis for the development of information digitization. With the rapid development of the chip manufacturing process, the integration level of the chip is getting higher and higher, and the processing speed is getting faster and faster, so higher requirements are put forward for the processing speed and performance of the ADC. For example, in terms of improving the performance of the ADC, a dither technology is proposed to reduce the harmonic components in the signal spectrum after the ADC performs analog-to-digital conversion, thereby effectively improving the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/46
CPCH03M1/46
Inventor 王昕宇
Owner 上海奥令科电子科技有限公司
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