An ultra-high gain low power two stage CMOS op-amp based on inverse aspect ratio self cascode structures
In: Analog Integrated Circuits and Signal Processing, Jg. 81 (2014-09-20), S. 349-359
Online
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Zugriff:
A very high gain (137 dB) two stage CMOS operational amplifier having structural simplicity of classical Widlar architecture has been presented. The differential input stage of proposed operational amplifier has been modified by incorporating inverse aspect ratio self cascode structures biased to operate in subthreshold region, to minimize the classical compensation capacitor to 0.1 pF and results in considerable saving in occupied chip area. P-SPICE simulations in 0.25 μm CMOS technology at ±1 V supply have been carried out to compare the performance of proposed operational amplifier with previously reported designs. The proposed operational amplifier demonstrated better gain-bandwidth product of 1.37 MHz, low power consumption of 21 μW and occupied smaller chip area of
Titel: |
An ultra-high gain low power two stage CMOS op-amp based on inverse aspect ratio self cascode structures
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Autor/in / Beteiligte Person: | Vajpayee, Prateek |
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Zeitschrift: | Analog Integrated Circuits and Signal Processing, Jg. 81 (2014-09-20), S. 349-359 |
Veröffentlichung: | Springer Science and Business Media LLC, 2014 |
Medientyp: | unknown |
ISSN: | 1573-1979 (print) ; 0925-1030 (print) |
DOI: | 10.1007/s10470-014-0411-0 |
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