Hybrid Cascode Compensation for Two-Stage CMOS Opamps
نویسنده
چکیده
This paper presents the analysis of hybrid cascode compensation scheme, merged Ahuja and improved Ahuja style compensation methods, which is used in two-stage CMOS operational transconductance amplifiers (OTAs). The open loop signal transfer function is derived to allow the accurate estimation of the poles and zeros. This analytical approach shows that the non-dominant poles and zeros of the hybrid cascode compensation are about 40 percent greater than those of the conventional cascode compensation. Circuit level simulation results are provided to show the accuracy of the calculated expressions and also the usefulness of the proposed cascode compensation technique. key words: operational transconductance amplifiers, cascode compensation, switched-capacitor circuits
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عنوان ژورنال:
- IEICE Transactions
دوره 88-C شماره
صفحات -
تاریخ انتشار 2005