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A New Fully Differential Adaptive CMOS Line Driver Using Fuzzy Controller Suitable for ADSL Modems

机译:一种适用于ADSL调制解调器的,采用模糊控制器的新型全差分自适应CMOS线路驱动器

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摘要

In this paper, a new principle for an adaptive line driver using Fuzzy logic is presented. This type of line driver can adapt its output impedance and gain, automatically to the applied load using a fuzzy logic controller (FLC). This results in automatically corrected output impedance for different cables with terminations. Also, the line driver output impedance and gain become insensitive to process and line variations. As an example, a line driver for ADSL application has been designed. The circuit operates from a 3.3 v in a 0.35 um standard CMOS technology. The power consumption of FLC is about 1 mW. The circuit dissipates 106 mW and exhibits a -62 dB THD for a 3.2-Vpp signal at 5 MHz across a 75 ohms Load. It has a relatively high -3 dB bandwidth (240 MHz) with good phase margin of about 67 degrees in a 10 pF load capacitor.
机译:本文提出了一种采用模糊逻辑的自适应线路驱动器的新原理。这种类型的线路驱动器可以使用模糊逻辑控制器(FLC)自动将其输出阻抗和增益调整为所施加的负载。这样可以自动校正带端子的不同电缆的输出阻抗。而且,线路驱动器的输出阻抗和增益对工艺和线路变化不敏感。例如,已经设计了用于ADSL应用的线路驱动器。该电路采用0.35 um标准CMOS技术的3.3 v工作电压。 FLC的功耗约为1 mW。该电路的耗散功率为106 mW,在75欧姆负载下,对于5 MHz上的3.2 Vpp信号,THD为-62 dB。它在10 pF负载电容器中具有相对较高的-3 dB带宽(240 MHz),具有约67度的良好相位裕度。

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