一种用于低功耗读通道前端的CMOS线性db可变增益放大器

2008 51st Midwest Symposium on Circuits and Systems Pub Date : 2008-09-03 DOI:10.1109/MWSCAS.2008.4616750

Xiong Liu, A. Willson

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引用次数: 1

摘要

提出了一种针对低功耗读通道前端的线性db型CMOS可变增益放大器(VGA)。在小于2 mA电流的偏置下，该VGA提供6-18 dB放大和超过700 MHz的3-dB带宽，在0.18 mA CMOS中THD小于-45 dB。此外，6- 18db增益可通过调整偏置电流连续调谐。有了这样的性能权衡，它非常适合移动存储应用程序。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A CMOS linear-in-dB variable gain amplifier for low power read channel front-end

A linear-in-dB CMOS variable gain amplifier (VGA) targeting a low power read channel front-end is presented. Biased with a less than 2 mA current, this VGA provides 6-18 dB amplification and more than 700 MHz 3-dB bandwidth with less than -45 dB THD in 0.18-mum CMOS. In addition, the 6-18 dB gain is continuously tunable by adjusting the bias current. With such a performance trade-off, it is well suited for mobile storage applications.

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2008 51st Midwest Symposium on Circuits and Systems

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