Active-error feedforward technique for linearization of cmos transconductance amplifier

被引：0

作者：

Szczepanski, Stanislaw ^{[1
]}

Koziel, Slawomir ^{[1
]}

机构：

[1] Gdansk Univ Technol, Fac Elect Telecommun & Informat, PL-80952 Gdansk, Poland

来源：

INTERNATIONAL JOURNAL OF ELECTRONICS AND TELECOMMUNICATIONS | 2005年 / 51卷 / 03期

关键词：

operational transconductance amplifiers; feedforward linearization; CMOS feed-forward amplifiers;

D O I：

暂无

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In the paper, a novel highly linear operational transconductance amplifier (OTA) is proposed. The circuit is developed using simple differential pair transconductors and linearization technique based on an active-error feedforward concept. As a result, improved linearity of the single-input two-output OTA is obtained. SPICE simulations show that for the circuit working with a +/- 1.25V power supply, total harmonic distortion (THD) at 0.6V(pp) is less then 0.38% in comparison to 10.0% without linearization. Moreover, the input voltage range of linear operation is increased. Power consumption of the overall circuit is 0.3mW. As an example, the linearized OTA is used to design a highly linear G(m),-C filter that implements 5(th) order Butterworth low-pass transfer function.

引用

页码：465 / 477

页数：13

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