In this paper an accurate and complete analysis of the CMRR for the most commonly used CMOS OTA's has been carried out. The analysis provides equations which can profitably be used in the design of high-accuracy integrated amplifiers to be employed in instrumentation circuits. The analysis shows that the CMRR of these circuits is highly affected by two poles which are caused by the zeros of the common-mode gain, By using the Spice simulator and the models of a 1.2-mu m CMOS process, we have found that the calculated frequency response of CMRR well fits the simulated curves for input frequencies as high as 100 MHz.
CMRR frequency response of CMOS operational transconductance amplifiers
GIUSTOLISI, Gianluca;PALMISANO, Giuseppe;PALUMBO, Gaetano
2000-01-01
Abstract
In this paper an accurate and complete analysis of the CMRR for the most commonly used CMOS OTA's has been carried out. The analysis provides equations which can profitably be used in the design of high-accuracy integrated amplifiers to be employed in instrumentation circuits. The analysis shows that the CMRR of these circuits is highly affected by two poles which are caused by the zeros of the common-mode gain, By using the Spice simulator and the models of a 1.2-mu m CMOS process, we have found that the calculated frequency response of CMRR well fits the simulated curves for input frequencies as high as 100 MHz.File in questo prodotto:
File | Dimensione | Formato | |
---|---|---|---|
R003 - CMRR Frequency Response of CMOS Operational Transcond.pdf
solo gestori archivio
Tipologia:
Versione Editoriale (PDF)
Licenza:
Non specificato
Dimensione
149.54 kB
Formato
Adobe PDF
|
149.54 kB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.