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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A 684-mW adaptive supply full-rate ADSL CO driver
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A 684-mW adaptive supply full-rate ADSL CO driver

机译：684mW自适应电源全速率ADSL CO驱动器

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摘要

A single 12-V supply ADSL line driver capable of delivering 20.4 dBm into a 100-/spl Omega/ load with a crest factor of 5.3 is described. Additionally, a theoretical power consumption derivation of several classes of amplifiers driving discrete multitone (DMT) waveforms is presented. A prototype of the driver was fabricated in a high-voltage bipolar process and evaluated in both pure analog and system environments. This driver achieves 18 V of ac swing on a single supply of 12 V dc. This is achieved by combining internal circuitry with external Schottky diodes and capacitors to modulate internal supplies to 24 V during high crest factor signal processing. The total power consumption is 672 mW when driving a resistive load and 684 mW when driving 8.16 Mb/s down a 6-kft line at a bit error rate of less than 1 e-07 in a full reference design.
机译：描述了一种能够以5.3的波峰因数向100- / spl的Omega /负载提供20.4 dBm功率的12 V电源ADSL线路驱动器。此外，提出了几种驱动离散多音（DMT）波形的放大器的理论功耗推导。该驱动器的原型采用高压双极性工艺制造，并在纯模拟和系统环境中进行了评估。该驱动器在12 V直流单电源下可实现18 V交流摆幅。这是通过将内部电路与外部肖特基二极管和电容器组合在一起，以在高波峰因数信号处理期间将内部电源调制为24 V来实现的。在完整参考设计中，驱动电阻性负载时的总功耗为672 mW，当以6kft的线下行时，误码率小于1 e-07时以8.16 Mb / s的速度驱动时，总功耗为684 mW。

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