Design and application of a novel low-voltage low-power OTA using signal attenuation technique for high linearity

被引：1
|
作者：
Garradhi, Karima [1 ]
Nouet, Pascal [2 ]
Hassen, Nejib [1 ]
机构：
[1] Univ Monastir, Microelect & Instrumentat Lab, Monastir, Tunisia
[2] Univ Montpellier, CNRS, LIRMM, Montpellier, France
来源：
ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 2023年 / 115卷 / 03期
关键词：
Operational transconductance amplifier (OTA); Dynamic range; Low-voltage; Low-power; Signal attenuation; Instrumentation amplifier; 5th order Butterworth filter; INSTRUMENTATION AMPLIFIER; CMOS OTA; FILTER;
D O I：
10.1007/s10470-023-02163-x
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents static and dynamic theoretical analysis of a new Operational Transconductance Amplifier (OTA) dedicated to low-voltage and low-power applications. High linearity is obtained using signal attenuation for rail-to-rail operation. Design, layout and post-layout simulations have been carried-out with Cadence Virtuoso in a 0.18 mu m CMOS technology. Post-Layout Simulation (PLS) demonstrates proper operation down to +/- 0.75 V supply voltage with a high open loop small-signal voltage gain of 58.26dB, a unity gain frequency of 18MHz and a total harmonic distortion of -66.55dB at 100 kHz for a peak-to-peak input voltage of 0.8V. Based on this circuit, two applications have been successfully demonstrated: on the one side, a 5th order Butterworth G(mC) filter and, on the other side, a voltage mode instrumentation amplifier.
引用
收藏
页码：319 / 334
页数：16
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