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Current-mode active compensation techniques

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2 Author(s)
Makris, C.A. ; Dept. of Electr. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK ; Toumazou, C.

A general class of active compensation techniques based on current-mode analogue signal processing is described. These techniques are applicable to typical amplifier structures embedded in capacitive networks, such as operational amplifiers and integrators. A measure of the magnitude of the amplifier's capacitive embedment is shown to be directly related to an effective capacitance. This is significantly reduced by applying the proposed current-mode active compensation techniques, resulting in considerable improvement in amplifier speed, accuracy and bandwidth.

Published in:

Electronics Letters  (Volume:26 ,  Issue: 21 )