Sampling clock generation circuit for multichannel time interleaving analog-digital converter
An analog-to-digital converter and a technology for generating circuits, applied in the direction of analog/digital conversion calibration/testing, etc., can solve the problems of increasing multi-channel sampling clock error, affecting phase calibration accuracy, reducing conversion accuracy, etc., to reduce the cost of hardware , the effect of eliminating errors and improving accuracy
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[0040] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:
[0041] Such as Figure 4 Shown is a schematic structural diagram of the sampling clock generation circuit of the present invention. From the figure, it can be seen that the sampling clock generation circuit of the present invention is composed of a multi-phase clock generation module 400, a duty cycle recovery circuit 410, and a channel selection module 420. The multi-phase clock generation module 400 generates the multi-phase clock signal required by the multi-channel digital-to-analog converter, and at the same time compensates the phase error of the multi-phase clock signal to ensure the accuracy of the sampling clock between the channels of the digital-to-analog converter. The duty cycle recovery circuit 410 is used to perform edge synchronization operation between the multi-phase clock generated by the multi-phase clock generation module and the ...
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