Investigation on The Performance as An Auto-Zero Comparator of Common Gate Differential Amplifier Based CMOS Inverter Circuit

Year 2020, Volume: 1 Issue: 2, 25 - 32, 21.12.2020

Oktay Aytar

https://doi.org/10.5281/zenodo.4069563

Abstract

In this study, the performance of the common gate difference amplifier cmos inverter circuit as an auto-zero comparator circuit was investigated using 0.18μm CMOS process model in the NCSU Design Kit of the Cadence IC5141 design program. The performance of the proposed structure was compared with traditional inverter circuit and darlington cmos inverter circuit. In accordance with the results of DC analysis, the voltage gain of the proposed circuit is 138, 92 V/V and it has more gain than the investigated circuits. According to obtained simulation results, the rising edge and descending edge delay times are observed 0.81ns and 0.99ns while operating with a clock frequency of 5GHz and an input frequency the rising and the descending ramp signal of 50 MHz, respectively. The average power consumption of the proposed structure is 15,4mW under the same conditions.

Keywords

Common Gate Differential Amplifier Based CMOS Inverter Circuit, Auto-Zero Comparator, Darlington CMOS Inverter, Traditional Inverter Circuit

Ortak Gate Fark Yükselteç Tabanlı CMOS İnverter Devresinin Auto-Zero Karşılaştırıcı Performansının İncelenmesi

Abstract

Yapılan bu çalışmada, Cadence IC5141 tasarım programı NCSU Design Kit’de 0.18μm CMOS teknoloji kütüphanesi kullanılarak ortak gate fark yükselteçli cmos inverter devresinin auto-zero karşılaştırıcı olarak performansı incelenmiştir. Önerilen bu yapı geleneksel inverter devresi ve darlington cmos inverter yapıları ile karşılaştırılmıştır. Yapılan DC analiz sonucuna göre ortak gate fark yükselteçli inverter devresinin gerilim kazancı 138,92 V/V bulunmuş olup, incelenen yapılardan daha fazla kazanca sahip olduğu görülmüştür. Aynı zamanda karşılaştırıcı yapısının girişine 50MHz frekansında yükselen ve inen bir rampa işareti ve saat frekansı da 5GHz uygulandığında, sırasıyla yükselen kenar gecikme süresi 0.81ns, inen kenar gecikme süresi de 0.99ns elde edilmiştir. Bu yapının aynı şartlar altında ki ortalama güç tüketim değeri de 15,4mW’tır.

Keywords

Ortak Gate Fark Yükselteç Tabanlı CMOS İnverter, Darlington CMOS İnverter, Auto-Zero Karşılaştırıcı, Geleneksel İnverter

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