A pipelined analog-to-digital converter and its output correction method

Abstract

The present invention provides a pipelined analog-to-digital converter and its output correction method. The pipelined analog-to-digital converter is converted in the traditional pipelined analog-to-digital converter through a control module, an equivalent gain error extraction module, an error storage module, and a code reconstruction module. On the basis of the converter, an error correction mechanism is introduced to compensate and correct the gain error and setup error caused by the operational amplifier in the pipeline conversion module, which improves the accuracy of analog-to-digital conversion, and at the same time relaxes the requirements for the gain and bandwidth of the operational amplifier. The power consumption of the digital converter and the design complexity of the analog circuit; wherein, the pipelined analog-to-digital converter uses a curve fitting method to obtain an ideal output sequence and then calculates the error, which can smooth out the influence of noise and has a high tolerance to noise ; At the same time, the extraction and correction of the equivalent gain error are all digital methods, the extraction accuracy and correction accuracy of the equivalent gain error are high, and the accuracy of the analog-to-digital conversion is further improved.

Description

technical field [0001] The invention relates to the technical field of analog-to-digital conversion, in particular to a pipelined analog-to-digital converter and an output correction method thereof. Background technique [0002] An analog-to-digital converter is an electronic component that converts analog quantities into digital quantities through a certain circuit. The requirements of modern complete machine systems for analog-to-digital converters are getting higher and higher, including high speed, high precision, and low power consumption. Traditional analog-to-digital converters usually lead to high power consumption while achieving high speed and high precision. [0003] In view of this, a new technical means is urgently needed to realize an analog-to-digital converter with high speed, high precision and low power consumption. Contents of the invention [0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to ...

AI Technical Summary

Problems solved by technology

Traditional analog-to-digital converters, while achieving high speed and high precision, usually result in high power consumption

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