一种具有差模带宽扩展和共模补偿的线性跨导放大器

Derui Kong, Sang Min Lee, S. M. Taleie, M. J. McGowan, Dongwon Seo
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引用次数: 1

摘要

介绍了一种具有扩展带宽的跨导放大器,它是放大器、滤波器和dac等各种应用中的关键模块。该技术在引入共模正电容的同时引入差模负电容,从而扩展了差模带宽并补偿了共模稳定性。所提出的跨导放大器已应用于CMOS 20nm的DAC中,以改善负跨导电路的失真性能,但所提出的技术适用于广泛的具有跨导电路的电路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A linear transconductance amplifier with differential-mode bandwidth extension and common-mode compensation
A transconductance amplifier with extended bandwidth, which is a critical block in various applications including amplifiers, filters and DACs, is presented. The presented technique introduces a differential-mode negative capacitance while introduces the common-mode positive capacitance such that it extends the differential-mode bandwidth and compensates the common-mode stability. The proposed transconductance amplifier has been implemented for a DAC in CMOS 20nm to improve the distortion performance as a negative transconductance circuit, but the proposed technique is applicable to the wide range of circuits with a transconductor.
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