Channel randomization circuit and method based on time-interleaved ADC

Abstract

The invention provides a channel randomization circuit and method based on a time-interleaved ADC, and the circuit comprises a channel selection module which is used for outputting M clock receiving control signals and N coded data receiving control signals according to a main clock and a generated random number; the multi-phase clock distribution module is used for generating N multi-phase clocks according to a sampling main clock, redistributing the multi-phase clocks according to the clock receiving control signal, and outputting M redistributed clock signals; the time-interleaved ADC module is used for outputting M pieces of output data and a corresponding number of channel quantization completion signals according to the redistribution clock signal; the adjustable delay module is used for setting the delay size of the data receiving control signal; and the time sequence distribution control module is used for controlling the output data to be sequentially arranged and output according to a time sequence according to the delayed data receiving control signal and the channel quantization completion signal.

Description

technical field [0001] The invention relates to the technical field of analog-to-digital converters, in particular to a channel randomization circuit and method based on a time-interleaved ADC. Background technique [0002] In recent years, with the continuous development of integrated circuit manufacturing technology and 5G technology, there is an increasing demand for ultra-high-speed and high-precision high-performance ADCs in the military and civilian fields. In order to achieve ultra-high-speed (above 1GHz sampling rate) high-resolution High rate (above 10Bit) ADC, the time-interleaving structure has gradually become the designer's preferred structure due to its simple principle and excellent performance. It increases the overall sampling rate of the ADC by time-division multiplexing according to the channel order. [0003] Although the time interleaving structure can greatly increase the sampling rate, due to the characteristics of the integrated circuit process, each ...

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Problems solved by technology

[0004] In view of the above existing problems in the prior art, the present invention proposes a channel randomization circuit and method based on a time-interleaved ADC, which mainly solves the problem that the existing circuit is difficult to achieve channel randomization without affecting the performance of the original time-interleaved ADC.

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