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Novel amplifier gain insensitive switched capacitor integrator with same sample correction properties

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3 Author(s)
H. Shafeeu ; Dept. of Electr. & Electron. Eng., Univ. Coll. London, UK ; A. K. Betts ; J. T. Taylor

A novel finite gain insensitive (FGI) switched capacitor (SC) integrator is presented. By sampling the error voltage produced due to finite gain of the amplifier in one phase and correcting for this error in the subsequent phase, highly accurate output is obtained. The resulting phase and gain errors are considerably smaller than those of other FGI-SC integrators. For high Q filters, the integrator exhibits same sample correction properties and can implement FGI pseudo-N-path (PNP) integrators with fewer components than other available FGI-PNP integrators.

Published in:

Electronics Letters  (Volume:27 ,  Issue: 24 )