China Electronics Technology Group Corporation No. 24 Research Institute

Chongqing University

Chongqing Hongjiang Machinery Co., Ltd.

Chao Chen

Dongbing Fu

Guangbing Chen

Ting Li

Ruzhang Li

Yong Zhang

Yabo Ni

Liang Li

Jianan Wang

Huaiqiang Yu

Yi Wu

Yue Liu

Peng Zhang

Zheng Li

Ruiyuan Li

Jun Jiang

Dongxia Zhang

Ye Li

Tianhua Tu

Huie Liu

Yang Liu

Lang Gao

Yuanwen Xie

A method for correcting an analog-to-digital converter includes the following steps: extracting gain errors and weight errors of all conversion stages of an analog-to-digital converter; performing first correction on the analog-to-digital converter based on the gain errors and the weight errors; extracting jitter errors of all conversion stages of the analog-to-digital converter after the first correction; and performing a second correction on the analog-to-digital converter based on the jitter errors. According to the disclosure, the gain errors, the weight errors, and the jitter errors of all conversion stages are successively extracted, and then the analog-to-digital converter is corrected. Precision after the corrections is higher. An actual weight of each quantization unit at each conversion stage, an actual inter-stage gain of each conversion stage and an actual weight of jitter are extracted, impact of a jitter weight is eliminated during outputting, and a signal-to-noise ratio of analog-to-digital conversion is increased.

Method for correcting analog-to-digital converter

A method for calibrating an analog-to-digital converter includes the following steps: conducting an initial performance test and judgement on the analog-to-digital converter; if the initial performance test succeeds, performing a pre-trimming and judgement on the analog-to-digital converter; if the pre-trimming succeeds, performing an error extraction on the analog-to-digital converter, obtaining errors of conversion stages of the analog-to-digital converter; performing an error soft trimming and test on the analog-to-digital converter according to the errors of the conversion stages; and if the error soft trimming and test of the analog-to-digital converter succeed, performing an error hard trimming and test on the analog-to-digital converter according to the errors of the conversion stages.

Method for calibrating analog-to-digital converter

Embodiments of the present disclosure propose an Erasing-based Lossless Floating-point compression method, i.e., Elf. The main idea of Elf is to erase the last few bits (i.e., set them to zero) of floating-point values, so the XORed values are supposed to contain many trailing zeros, where the erased bits are determined based on the decimal place count and the digits on the exponent bits.

Erasing-based lossless compression and decompression methods for floating-point data

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Chao Chen