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The multichannel high-frequency compensation of the analog sections of flash ADCs with the differential input at the cascade connection of the reference resistors

机译:闪存ADC模拟部分的多通道高频补偿,其差分输入位于参考电阻的级联连接处

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摘要

The circuit method of the frequency-response compensation of the input analog section (AS) of the high speed ADCs with the cascade connection of the reference resistors, based on the creation of special conditions for extending of its bandwidth from 200 MHz up to 4÷10 GHz is suggested. The analytical relations for the base block scheme of AS that render possible to calculate the elements of the frequency compensation depending upon the capacitance numerical values of the parasitic capacitors equivalent at the inputs of comparators of ADCs are obtained.
机译:基于为将其带宽从200 MHz扩展到4÷的特殊条件的创建,通过参考电阻的级联连接对高速ADC的输入模拟部分(AS)进行频率响应补偿的电路方法建议使用10 GHz。获得了AS基本模块方案的解析关系,该解析关系使得可以根据ADC比较器输入端等效的寄生电容器的电容数值来计算频率补偿的元素。

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