Low-voltage CMOS wideband operational transconductance amplifier with regulated cascode circuit

被引：0
|
作者：
Bouzerara, L [1 ]
Belaroussi, MT [1 ]
机构：
[1] CDTA, Microelect Lab, Algiers 16303, Algeria
来源：
ICES 2002: 9TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS AND SYSTEMS, VOLS I-111, CONFERENCE PROCEEDINGS | 2002年
关键词：
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A low voltage CMOS wideband operational transconductance amplifier (OTA), using regulated cascode structure with an active positive feedback, frequency-dependent current mirrors and feedforward techniques, is presented and analyzed. Such techniques stand as a powerful method of gain, bandwidth, output impedance and phase margin enhancements. In this paper, an efficient implementation of a high output impedance current mirror is used in the design of an OTA by means of the regulated cascode circuits. This amplifier operates at +/-1.25V power supply voltage, exhibits a voltage gain of 68dB, and provides a gain bandwidth product of 166 MHz. It drives a capacitive load of 1.6pF and gives a power dissipation of 8.5mW. The predicted performance is verified by simulations using HSPICE tool with 0.35mum CMOS TSMC parameters.
引用
收藏
页码：49 / 52
页数：4
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