A high frequency clock fanout
A high-frequency clock and fan-out technology, which is used in instrumentation, computing, electrical and digital data processing, etc., can solve the problem of multi-channel output and high-frequency high-performance can not have both, to increase the number of channels and drive capability, expand The effect of high bandwidth and characteristic frequency
Active Publication Date: 2022-08-02
58TH RES INST OF CETC
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Problems solved by technology
[0005] The purpose of the present invention is to provide a high-frequency clock fan-out device to solve the problem that the existing multi-channel output and high-frequency high performance cannot be achieved at the same time
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Embodiment 1
[0038] The present invention provides a high-frequency clock fanout, the overall structure of which is as follows: figure 1 shown. The high frequency clock fanout includes an input selection module 1 , an amplification module 2 , a fanout module 3 and a plurality of output drive modules 4 . The input selection module 1 is used to select an input clock channel; the amplification module 2 is used to restore and amplify the differential clock signal; the fan-out module 3 distributes one differential clock signal to multiple clock channels; the multiple output drivers Module 4 converts the multi-channel clock signals into LVPECL level outputs respectively, so as to improve the load-carrying capability of the clock drive. Further, the high-frequency clock fanout also includes a bandgap reference module 5 and a bias module 6, and the bandgap reference module 5 is connected to the input selection module 1, the amplification module 2 and the fanout module 3, respectively. The bias m...
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The invention discloses a high-frequency clock fanout, which belongs to the technical field of clock circuits. The high frequency clock fanout includes an input selection module, an amplification module, a fanout module and a plurality of output drive modules. The input selection module selects an input clock channel; the amplifying module is used to restore and amplify the differential clock signal; the fan-out module distributes one differential clock signal to multiple clock channels; the multiple output driving modules respectively The clock signal is converted into LVPECL level output, which improves the clock drive load capacity. The high-frequency clock fanout of the present invention has the functions of multi-channel selection input and multi-channel drive output, which can improve the flexibility of clock selection and distribution, realize low-noise, high-frequency clock fan-out, and satisfy multi-channel high-speed high-precision data conversion, etc. The system has strict requirements on clock performance.
Description
technical field [0001] The invention relates to the technical field of clock circuits, in particular to a high-frequency clock fanout. Background technique [0002] Clock fan-out is a technique that demultiplexes a clock signal to a buffered output. The clock fanout directly affects the performance of multi-channel data transceiver, data conversion and other systems, and is widely used in signal processing, military communications, radar, electronic countermeasures and other fields. [0003] With the continuous improvement of the application requirements of the whole machine system, the data conversion technology is constantly developing in the direction of high speed and high precision. As a key factor for high-speed and high-precision digital-to-analog converters and analog-to-digital converters, the performance of clock directly determines the signal-to-noise ratio and dynamic range of data converters. [0004] When the conversion clock speed is required to reach more t...
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IPC IPC(8): G06F30/396
CPCG06F30/30
Inventor 蒋颖丹刘雪莲于宗光张沁枫吴舒桐王祖锦
Owner 58TH RES INST OF CETC