A Novel Phase Compensation Technique for Integrated Feedback Integrators

Fujihiko MATSUMOTO  Yasuaki NOGUCHI  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E81-A   No.6   pp.1168-1171
Publication Date: 1998/06/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section of Papers Selected from ITC-CSCC'97)
Category: Analog Signal Processing
analog integrated circuits,  integrators,  excess phase shift,  phase compensation,  

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A novel phase compensation technique for feedback integrators is proposed. By the technique, a zero is obtained without employing extra capacitors. A design of an integrator for IC using the proposed technique is presented. The frequency of the parasitic pole is proportional to the unity gain frequency. It is shown that excess-phase cancellation is obtained at any unity gain frequency.