Low-voltage CMOS current amplifier and its use for high-performance voltage amplification

被引：12

作者：

Pennisi, S ^{[1
]}

机构：

[1] Univ Catania, Dipartimento Ingn Elett Elettron & Sistemi, I-95125 Catania, Italy

来源：

IEE PROCEEDINGS-CIRCUITS DEVICES AND SYSTEMS | 2003年 / 150卷 / 03期

关键词：

D O I：

10.1049/ip-cds:20030350

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A CMOS current operational amplifier (COA) is exploited to obtain a voltage amplifier operating at 1 V and with an input bias voltage of 0.5 V. The COA employs a class AB input stage that enhances the slew-rate performance and provides accurate control of both the quiescent currents and the input bias voltage. It exhibits a 56-dB loop gain with a gain bandwidth product of 18 MHz. Based on this COA, a 1-V voltage amplifier is implemented. It provides a constant closed-loop bandwidth of about 2 MHz and exhibits a THD better than -60 dB for a 1-MHz 600-mV(pp) output signal.

引用

页码：205 / 209

页数：5

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